The Imposter Within The Forest

Creatures you control are Sus in addition to their other types.
Trample, Deathtouch
The Imposter Within The Forest gets +X/+X where X is the number of sus creatures you control times 2.
{x}{b}{t}: Create X 4/4 Megasus Impostor tokens with trample and deathtouch.
{p/b}{p/b}{p/b}{p/b}{p/b}: Annihilate all non Sus creatures.
...She vented to comms and killed blue.