LN Illumian with Krau sigil
Totemist2/Ardent1/Druid1/Psychic Theurge 6/Contemplative1/Sapphire Heirarch6/Sacred Exorcist1/+2 SH
Feats:
Flaw) Extend Spell
Flaw) Magical Training (or whatever that regional feat was that gives you 3 cantrips)
1) Power Sigil Krau
3) Practiced Manifester
6) Obtain Familiar
9) Share Soulmeld
12) Psicrystal Affinity
15) Persist Spell
18) DMM: Persist
1 Familiar
1 Urban Companion
1 Psicrystal
All with Manticore Belt Shotgunnery. Use Exchange Domain (or whatever it was called) to get War, and persist/share Divine Power, and use Compression for major bonus to hit at range.
Soulmeld damage is set unless specifically stated otherwise (as for trample attacks), sothat gives you 5 x spikes from each of 3 buddies on your shoulder for 1d6 each, plus buffs.
Yeah I know, a lot of trouble for one trick, but eh. Amusing.