Ezra Docith, the Ranger

Reach (This creature can block creatures with flying.)
When Ezra Docith enters the battlefield, you may
search your library for a card named Skoll, Not A
Dog. If you do, you may place that card onto the
battlefield from your library.
{2}{t}: Ezra Docith fires an arrow at target
creature. Flip a coin. If you win the flip, destroy
that creature, and if Skoll, Not A Dog is on the
battlefield under your control put a +1/+1
counter on it.