"Here's hoping trees have weak spots..."Mustave throws a barrage of acid at the tree, unless he isn't withing 30 feet. Otherwise, he'll move 30 feet and make a single attack (add 4 to the attack roll of the first one rolled).
Flask 1 -> 1d20+9
touchRolled 1d20+9 : 14 + 9, total 23
Damage -> 1d6+1
Rolled 1d6+1 : 4 + 1, total 5
Sneak Attack, if applicable (I hope I hope I hope!) -> 2d6
Rolled 2d6 : 6, 3, total 9
Flask 2 -> 1d20+9
touchRolled 1d20+9 : 14 + 9, total 23
Damage -> 1d6+1
Rolled 1d6+1 : 1 + 1, total 2
Sneak Attack, if applicable -> 2d6
Rolled 2d6 : 5, 1, total 6
Flask 3 -> 1d20+9
touchRolled 1d20+9 : 12 + 9, total 21
Damage -> 1d6+1
Rolled 1d6+1 : 1 + 1, total 2
Sneak Attack, if applicable -> 2d6
Rolled 2d6 : 6, 6, total 12
Flask 4 -> 1d20+4
touchRolled 1d20+4 : 15 + 4, total 19
Damage -> 1d6+1
Rolled 1d6+1 : 1 + 1, total 2
Sneak Attack, if applicable -> 2d6
Rolled 2d6 : 5, 5, total 10