Masticore [Urza's Destiny] Pro Tour Promos Set: Commander 2011 Type: Enchantment

Set: Commander 2011 Type: Enchantment Rarity: Rare Cost: {1}{B}{B}{B} Whenever a creature you control dies

Set: Beta Edition Type: Instant Rarity: Common Cost: {B} Add {B}{B}{B}

Set: Weatherlight Type: Artifact Rare Cost: {3} {3}

Set: Alpha Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{U} Enchant enchantment

you may skip that turn instead

Masticore [Urza's Destiny] Pro Tour Promos Set: Commander 2011 Type: EnchantmentSet: Urza's Destiny Type: Artifact Creature Masticore Rare Cost: {4} At the beginning of your upkeep, sacrifice Masticore unless you discard a card. {2}: Masticore deals 1 damage to target creature. {2}: Regenerate Masticore.