Kwoaly of the Forest

+1: Turn target land into a Eucalyptus Forest. If you do, you may search your library for a Eucalyptus Forest and put it onto the battlefield tapped.
-1: Turn target tapped creature into a 3/3 koala token creature. It gains haste and first strike. It also gains +2/2 until end of turn.
-7: Turn all humans into 3/3 koalas. You may gain control of all koalas. Koalas you control gain +2/2 and haste until end of turn.