Etzala, Primal Bounty

Flash
When Etzala enters the battlefield, if it was cast,
phase out all other creatures. Then draw
X cards and gain X life, where X is the
number of permanents phased out this way
{g}{u}{w}{t}: phase out target creature
it's controller gains life equal to its power.
Etzala becomes a copy of
that creature until the end of your next turn.