(http://img1.wikia.nocookie.net/__cb20140317141628/mlp/images/4/45/Spider_presenting_a_flower_S4E18.png)
Could you remind me how to shwink pictures when posting them here?
(http://vignette2.wikia.nocookie.net/mlp/images/a/a7/Harry_the_bear_hugging_critters_S5E3.png/revision/latest?cb=20150413183327)
(http://i.ytimg.com/vi/GfNClsyO-oU/maxresdefault.jpg)
(https://i.ytimg.com/vi/4eipiZDdVvg/maxresdefault.jpg)
(http://sailormoonnews.com/wp-content/uploads/2012/11/my_little_pony_twilight_sparkle_and_shards_of_evil_black_crystal.jpeg)
or
(http://img2.wikia.nocookie.net/__cb20150713232534/mlp/images/thumb/2/20/Princess_Luna_traps_the_Tantabus_in_crystal_S5E13.png/640px-Princess_Luna_traps_the_Tantabus_in_crystal_S5E13.png)
(http://images.wikia.com/mlp/images/6/66/Full_Force_Field_S2E23.png)
(http://i.ytimg.com/vi/1E5RPvzZEk8/maxresdefault.jpg)
(http://vignette4.wikia.nocookie.net/mlp/images/e/e4/Rarity_Dramatic_Sofa_Time..._again_S2E3.png/revision/latest?cb=20111015154530)
or
(https://mlpforums.com/uploads/monthly_02_2015/post-31234-0-36318200-1424321169.png)
I couldn't find the one with the door.
(http://t3.gstatic.com/images?q=tbn:ANd9GcSNJCuvQ3GiDfVbucdibKzT9sFU0TSdmKSIELQavfm6QUwUMvE-lg)
(http://i245.photobucket.com/albums/gg78/evalana/blog%202/mlpfim_ep3443.png)
(http://i.ytimg.com/vi/qRCGcfSqT5I/maxresdefault.jpg)
(http://i.ytimg.com/vi/wlUDrDOCNGM/maxresdefault.jpg)
(https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcQ_XC6ajMFWYmNJtxCjcX4W5ccusV_pbtMJh7WBdjEgA6xA96Te)
(http://vignette3.wikia.nocookie.net/mlp/images/1/1b/Snails_running_around_with_Snips_on_top_S3E4.png/revision/latest?cb=20121210203732)
or
(http://img3.wikia.nocookie.net/__cb20121210203307/mlp/images/0/02/Rainbow_Dash's_big_wing_S3E5.png)
or
(https://i.ytimg.com/vi/cilfGI_qofI/maxresdefault.jpg)
(http://i.ytimg.com/vi/vcEIRRLTL9o/maxresdefault.jpg)
Also age spell (noted at being extremely difficult - Trixie could only pull it by using a cursed amulet, and Twiligh cheated instead)
(http://images1.wikia.nocookie.net/__cb20121207080156/mlp/images/thumb/1/1d/Baby_Snips_and_old_Snails_S3E05.png/640px-Baby_Snips_and_old_Snails_S3E05.png)
And this, if you have any use for it
(http://static.tvtropes.org/pmwiki/pub/images/Equippable_Ally_4717.png)
Oh... I think I have something better.
The comic series gives us the Umbrum, a race of evil spirits sealed for millenia under the north pole, who created Sombra as the champion destined to break them free and become their ruler.
(http://4.bp.blogspot.com/-bfW0WNIn04E/Vl8zHH3i1fI/AAAAAAACdJY/2mzfeedHid4/s1600/2.jpg)
It was used by Trixie when she was influenced by an evil amulet - as in the picture, she fused Snips and Snails' horns together, made Dash' wings assymetrical, and deleted Pinkie's mouth (which was somehow harmless, but kept her mute for the rest of the episode)
(https://i.ytimg.com/vi/cilfGI_qofI/maxresdefault.jpg)
Bugbear
(http://vignette4.wikia.nocookie.net/mlp/images/f/f3/Mane_Six_fight_the_bugbear_at_Carousel_Boutique_S5E9.png/revision/latest?cb=20150615112216)
Arimaspi
(https://derpicdn.net/img/2015/5/23/902371/large.jpg)
Let's see what I can find...
genealogy research:
(http://vignette4.wikia.nocookie.net/mlp/images/c/c9/Pinkie_Pie_perusing_genealogy_scroll_S4E09.png/revision/latest?cb=20140113094918)
Some miscalleanous ones that might be useful: (for example, cake might be 'food', or it might replace whiskey)
(http://vignette4.wikia.nocookie.net/mlp/images/3/3f/Pinkie_on_a_tree_branch_holding_a_crossbow_S5E19.png/revision/latest?cb=20151019175640)
(http://vignette2.wikia.nocookie.net/mlp/images/e/e0/Pinkie_Pie_instruments_S1E10.png/revision/latest?cb=20110821112313)
(http://vignette3.wikia.nocookie.net/mlp/images/c/cd/Pinkie_Pie_about_to_eat_another_cake_S1E10.png/revision/latest?cb=20110925153923)
(https://1.bp.blogspot.com/-LFbcymLfUZg/Vt7jApfv4II/AAAAAAAAi0E/EN9bE5IGxT4/s1600/Twilight_tries_to_measure_Pinkie%2527s_predictions_S1E15.png)
(http://3.bp.blogspot.com/-zgFkacyfNN8/VY-uT-ktUwI/AAAAAAAAAs4/TQjKWWDHpMs/s640/vlcsnap-2015-06-28-10h20m12s240.png)
(http://i245.photobucket.com/albums/gg78/evalana/blog%202/mlpfim_ep4218.png)
I'll see in a sec.
In the meantime - ponies apparently use pies as weapons.
(http://vignette1.wikia.nocookie.net/mlp/images/0/0a/Sheriff_Silverstar_and_ponies_ready_pies_S1E21.png/revision/latest?cb=20150502214539)
(http://vignette4.wikia.nocookie.net/mlp/images/a/a2/Piles_McColt_with_an_axe_S5E23.png/revision/latest?cb=20151117021434)
an axe
(https://derpicdn.net/img/2016/2/24/1096079/full.png)
a camera
(http://2.bp.blogspot.com/-iT1y-VknuWU/T1mVVQ7VDWI/AAAAAAAABWw/fkaBJ70C9Y0/s1600/map.png)
a map
Actual series footage:
(https://i.ytimg.com/vi/sGrUyTIePYE/maxresdefault.jpg)
(http://vignette4.wikia.nocookie.net/mlp/images/c/c0/Sock_puppet_dimension_S5E7.png/revision/latest?cb=20150518222659)
meanwhile, a new pony weapon - a bag of rocks.
(http://vignette1.wikia.nocookie.net/mlp/images/b/b6/Maud_Pie_Sombra_timeline_ID_S5E25.png/revision/latest?cb=20151202050814)
maulwurf (https://4.bp.blogspot.com/-ph1ksIztwzM/WaujfvGQ2lI/AAAAAAAADbA/z_saKKk7U9IhdR121tCVJma0KoUm9YzsgCK4BGAYYCw/s1600/vlcsnap-error684.jpg)
sphinx (https://i.gyazo.com/ef6ffd5bbc9e8ce82da51fa1111e2eab.jpg)
Not sure what this is - changeling captain of the guard used it as his combat form: (https://4.bp.blogspot.com/-jsfitOhOAhE/WawoO5qCAYI/AAAAAAAADeU/5qjpCdLHs2IvzdYVWX6TNjCNVF5nJ9g8wCK4BGAYYCw/s1600/vlcsnap-error880.jpg)
Flyders (https://1.bp.blogspot.com/-EsW-3taTzH4/WaLobrm2a0I/AAAAAAAC2Rc/qeD7JHUFAV0846RrhAxIUb6VUrTUTB3yQCLcBGAs/s1600/vlcsnap-00009.jpg)
Axe (https://1.bp.blogspot.com/-UkxVYewobFQ/WaLoe5KA78I/AAAAAAAC2SA/KuwOW8agAbMUg8Id9CogLR6QHAW89rnewCLcBGAs/s1600/vlcsnap-00018.jpg)
new spell: entangling vines: (https://1.bp.blogspot.com/-qvb3tAUKIAw/WaLonqju-mI/AAAAAAAC2TQ/8ihtjFNC4iEx00LBcHhkpRC8d61b0UbtgCLcBGAs/s1600/vlcsnap-00039.jpg)
magic item: Netitus shield: (provides total cover from fire attacks, as long as you can hold it between yourself and the attacker.)
(https://1.bp.blogspot.com/-Tew2amawmZk/WaLovQSxKWI/AAAAAAAC2UA/pt4JZ16L24YassMsWEO55X0D9R6fEmBfQCLcBGAs/s1600/vlcsnap-00052.jpg)
Tome: friendship journal. (the girls' own diary of past lessons, worth re-reading for clues) (https://3.bp.blogspot.com/-2PFyL1k7tRA/WY-kKmk7j1I/AAAAAAAACjk/IqvohHoJPYU2UZRCVsXvD0DrhN5dQH-dACK4BGAYYCw/s640/FAM-error910.png)
New spell: minor avatar (remotely creates an item the user can talk through) (https://1.bp.blogspot.com/-7vLV5OaDvVY/WSCtgbwNqgI/AAAAAAAAB5s/lPvRREmgSL0i9KUoewhU0Lk8GMiT2yK3QCK4B/s1600/Royal-Problem-error175.png)
New spell: cutie mark switch - switches special talents of two ponies. Lasts 24 hours and can't be ended early. (https://3.bp.blogspot.com/-p3CA3Uy-q1U/WSDAiZurIcI/AAAAAAAAB8A/rWNLiVo8r_QXrz1GHFhu4ylczoK_41a_ACK4B/s1600/Royal-Problem-error443.png)
Newspaper: (https://2.bp.blogspot.com/-q_KdgBMDU2A/WSDRQ2lcvnI/AAAAAAAAB-k/OidJWl5_P2wAdthkWG_qVvGMeaefAicXwCK4B/s1600/Royal-Problem-error149.png)
Daybreaker: not a real monster, but a nightmare one of the ponies had - possible other world encounter? It's princess Celestia gone mad with power. (https://2.bp.blogspot.com/-CRphFev4fKM/WSDpWgvxaJI/AAAAAAAACCM/chEBRBeyu2EitlFvmC0Y6U_ExYoGWgelwCK4B/s1600/Royal-Problem-error094.png)
official friendship ambassador badge (https://2.bp.blogspot.com/-KF526vPvKvY/WSOVm2GeKKI/AAAAAAAAG0A/OPb2f7C1Ggwu9TRGkCmS3VH2Y5MJzCWbQCLcB/s640/vlcsnap-00016.png)
magic grenade: (https://4.bp.blogspot.com/-nmgvV5GOvDw/WVXIk1xNGgI/AAAAAAAACZI/mLB78o8ppRE72SJYmtL9hxMvXD0PhA4yQCK4BGAYYCw/s640/surrender.PNG)
cutlass: (https://1.bp.blogspot.com/-EeKvlCRPPlo/WVXf14DG1eI/AAAAAAAACaQ/8QJzfbcFhpE-2F6Me70lccA0XJmGhVUjQCK4BGAYYCw/s1600/Sword.PNG)
Disguises: (https://4.bp.blogspot.com/-XFdcUyV0j2s/WRfqc70DjUI/AAAAAAAADec/cFXxT2rolIItuYYYmsfkS-HWlF3bGPpZQCLcB/s1600/Image1.jpg)
binoculars: (https://1.bp.blogspot.com/-UJCGrDlzkno/WRfqdlAIxQI/AAAAAAAADes/9tURnLlWiVAAoNfAGRZ51qWmYqHuhmhfwCLcB/s1600/Image14.jpg)
tiny pickaxe: (https://4.bp.blogspot.com/-C9bsE8E5ggo/WQYQC7EhBTI/AAAAAAACy20/aN5gEh2n9-IqH4Nsa1_NjXlxtXO1WecFgCLcB/s1600/vlcsnap-00092.jpg)
harp: (https://2.bp.blogspot.com/-FlM9khZ_3F8/WQYPlXnKXTI/AAAAAAACyzs/UoMeDS_3JbYl9YhsRg02T65Qc0r5byP1ACLcB/s1600/vlcsnap-00017.jpg)
Healer's mask. Designed to protect a doctor from exposure to infectious diseases. By pure coincidence, it also has just the right coloration to safely aproach flash bees. (https://4.bp.blogspot.com/-GKH6KhjfWmE/WUm7MBSv4mI/AAAAAAAAEZs/wEZnCIAcAykq9xUdreSZp7MlYMUvZWvfACPcBGAYYCw/s1600/MLP_LoM06-coverSUB%2Bcopy.jpg)
flash bees: (as described a couple posts before)
(https://i.imgur.com/m6mKp1G.jpg)
correction: as I suspected, the magic grenade does not explode - It's a petrification bomb, capable of penetrating force barriers, and powerful enough to take down things you really wouldn't want to fight.
New old one: Storm King
(https://vignette1.wikia.nocookie.net/mlp/images/b/b4/MLP_The_Movie_Hasbro_website_-_Storm_King_and_Tempest.png/revision/latest?cb=20170801050306)
A creature of unknown origin, the Storm King is a conqueror, who leaves a path of destruction in his wake. Like Tirek, he increases his power by stealing the magic from his victims. (turning them into stone with petrification grenades, and then draining their magic into his magic staff) unlike Tirek, he has an army to do his bidding - a fleet of zeppelins full of monsters that plunder the kingdoms he conquers.
Storm King's Minions - they operate his ships, and fight his battles. Tough enough to air drop from fifty feet with no visible harm.
(https://derpicdn.net/img/2017/6/30/1475406/thumb.jpeg)
Tempest Shadow - Storm King's chief headhunter, responsible for apprehending those he'd like to drain. She's mostly a physical fighter, using her agility and petrification grenades to fight: she has magic, like all ponies, but her damaged horn makes it hard to properly focus - her magic is only good for blowing things up.
(http://www.youloveit.com/uploads/posts/2017-08/1501837568_youloveit_com_my_little_pony_the_movie_wallpapers10.jpg)
Okay, so the season 7 finale has been leaked.
It turns out the Pony of Shadows used to be a unicorn (apprentice?) serving Starswirl the Bearded, the legendary mage. He was instrumental in forming the Pillars of Equestria, a group of six heroes who would keep the ponykind safe in his time, but as time went on, he resented being stuck as a sidekick - driven by envy, he stole six items belonging to the heroes (the shield and the healer's mask I've already listed, a magic-infused flower, a shovel, a necklace and a spellbook) and tried to use them in a ritual to empower himself.
When the heroes stopped him, he was banished, and apparently turned to some darker sources of power, because the next time they met, he was an abomination of living darkness - the heroes managed to contain him in a ritual that trapped the seven of them in a time-stopped dimensional anomaly.
also, a short clip from the movie
https://www.youtube.com/watch?v=Ju_kOWAYGmA (https://www.youtube.com/watch?v=Ju_kOWAYGmA)
Ancient earth pony map
(https://4.bp.blogspot.com/-ApRHOIbeFsI/WewaE82eQXI/AAAAAAAAEP8/0T3x7_gufKkpN0MqtxzyAWYgepZb6DhSgCK4BGAYYCw/s1600/UnB-2017-10-21-22h13m43s369.jpg)
Starswirl's lost journal.
(https://2.bp.blogspot.com/-5iRLaq3TIY8/WewjmY1WbkI/AAAAAAAAEYQ/pm7Tz26r3a0MLws1HHkKmQQmSyRdZ5mYwCK4BGAYYCw/s1600/UnB-2017-10-21-22h51m45s194.jpg)
It contains the notes from the last days before his mysterious disappearance, including some details of spells he was working on. It's a real treasure for somepony who can decypher it (it is written in old ponish - also, Starswirl's writing was horrible to the point of illegibility)
Sirens (we had them before, but here's a better picture)
(https://3.bp.blogspot.com/-7oTpcuHZtuI/WfTVthEJYlI/AAAAAAAATAE/MC_Psuv_k_cSzCayW7FRxfXwAFPpuxyXACLcBGAs/s1600/vlcsnap-2017-10-28-14h08m35s974.png)
also
(https://1.bp.blogspot.com/-aE4C-WGvxj0/WfYaLuZkYRI/AAAAAAAATCE/x6Fr7vUkqfoeqxkrOJOXFwFXvAMZH7X4QCLcBGAs/s1600/stygian_transform.gif)