Trapinch

You may cast Trapinch from your graveyard by tapping a Desert instead of paying its mana cost.
Last strike
Protection from sources that cost {e}
As long as you control a Desert, Trapinch has hexproof as long as it's untapped, and whenever Trapinch blocks, it loses last strike and gains first -strike until end of turn.
{g/w}{g/w}{g/w}, {t}: Reveal the top card of your library. If it's a creature card, destroy target tapped
creature without flying.