Well, with opponent hax it should be easy
Pet vodoo doll
Qtower
6x seed
Turn 1: play tower, triple infect doll. 3
Opponent: Qtower, Qtower, 6x chaos seed (all infect) YARG KILL DOLL. 9
Turn 2: 3x seeds are TU, 27
+9
original = 36
on him.
If you want exactly 30 then your first TU is instead another infect.
Without opponent hax I need more thinking...