Rena, Twilight

Reach, Infect, Forestwalk, Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
{b}{g}: This creature gains Deathtouch until end of turn.
{b}{b}{b}{g}{g}{g}{g}{g}{b/g}{b/g}: Until end of turn, all lands players control become Forests.
"This is Eldrasil's will... Now, there is nothing to be afraid of."