Xayacoatl, the Masked One

Changeling
{1}{g}{u}: Xayacacoatl, the Masked One becomes a
copy of target creature until end of turn.
Whenever a you don't control creature becomes
the target of a spell or ability, each player may
pay {2} have you draw a card. For each player
that doesn't, create a token that's a copy of that
creature.