The ability triggers when the spell is cast, so it becomes a creature before the spell resolves.
01-08-2008
wotc
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.
04-10-2004
wotc
It changes into a creature even if the spell is countered.
04-10-2004
wotc
When it turns into a creature, it is no longer an enchantment.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.