Restless Vinestalk

Restless Vinestalk enters tapped.
{t}: Add {g} or {u}.
{3}{g}{u}: Until end of turn, Restless Vinestalk
becomes a 5/5 green and blue Plant creature
with trample. It's still a land.
Whenever Restless Vinestalk attacks, up to one
other target creature has base power and
toughness 3/3 until end of turn.