Ugh, that's actually kind hard :) I'll pick the Grim Lavamancer.
Forest, Skywing Aven, Done.
Spidey: 20
Hand: 10
In Play:
(T) Swamp
(T) Mountain
(T) Island
(T,T) Forest x2
(U) Squirrel token (1/1)
(U) Squirrel token (1/1)
(S) Mesmeric Fiend (1/1, when ~ CIP, target opponent reveals his...