Still Life

{1}{G}{G} · Enchantment

{G}{G}: This enchantment becomes a 4/3 Centaur creature in addition to its other types until end of turn.

Motor: se resuelve a mano

Rulings (1)

A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.
Wizards of the Coast · 2008-08-01