Desperate Holdout

Gunfire 2 ({t}: This creature deals 2 damage to target creature.)
This creature doesn't untap during your untap step. When this card is turned face up, untap it.
Lurk {c} ({c}: Turn this card face down. While face down it is a 3/3 creature with no color and no creature type. Turn it face up at any time by discarding a card.)