Eileen the Crow

Menace
Whenever Eileen the Crow attacks, you may
sacrifice another Hunter creature you control
and pay life equal to it's power. When you do,
Eileen the Crow gets +X/+0 until end of turn,
and you draw X cards, where X is the amount
of life you paid. If X is 4 or more, Eileen the
Crow also gains trample until end of turn.
"A Hunter must Hunt."