Dragon Tyrant [Scourge] Human then sacrifice it unless you

then sacrifice it unless you pay its upkeep cost for each age counter on it

Set: Commander 2011 Type: Creature — Crab Beast Rarity: Rare Cost: {4}{U} Morph {4}{U} (You may cast this card face down as a 2/2 creature for {3}

Set: Guilds of Ravnica Prerelease Promos Type: Creature — Vampire Assassin Rarity: Rare Cost: {1}{B}{B} Lifelink

exile Jace

Dragon Tyrant [Scourge] Human then sacrifice it unless youSet: Scourge Type: Creature Dragon Rarity: Rare Cost: {8}{R}{R} Flying, trample Double strike (This creature deals both first strike and regular combat damage.) At the beginning of your upkeep, sacrifice Dragon Tyrant unless you pay {R}{R}{R}{R}. {R}: Dragon Tyrant gets +1 +0 until end of turn.