Hungry Hungry Heifer [Unglued] Standard but if there's one thing

but if there's one thing I've learned in all my years of sailing

Set: Ravnica: City of Guilds Type: Creature — Giant Soldier Rarity: Uncommon Cost: {4}{W}{W} Vigilance

Set: Worldwake Type: Creature — Kor Scout Rarity: Common Cost: {1}{W} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

Set: Urza's Destiny Type: Sorcery Rarity: Uncommon Cost: {2}{B}{B} Exile target nonblack creature

Hungry Hungry Heifer [Unglued] Standard but if there's one thingSet: Unglued Type: Creature Cow Rarity: Uncommon Cost: {2}{G} At the beginning of your upkeep, you may remove a counter from a permanent you control. If you don't, sacrifice Hungry Hungry Heifer. Mooo.