The Snatcher

Lifelink, Deathtouch.
When The Snatcher enters battle, you may
discard a card. If you do, exile target creature or
choose a card in exile and place it onto your
hand.
{4}: Put three +1/+1 counters on The Snatcher.
If The Snatcher kills an enemy creature on the
following turn, target ally creature
gains Unearth.