Choranos, Reader of the Wild

Lifelink, trample.
Whenever a creature you control escapes if it's
green or white it gains your choice of lifelink
or trample and is a human in addition to its
other types for as long as Choranos, Reader of
the Wild is on the battlefield.
Escape—{1}{g}{w} Exile 4 other cards from your
graveyard. ( You can cast this spell from your
graveyard for its escape cost.)