Hedron Crab [Zendikar] Urza's Saga Promos Set: Ice Age Type: Enchantment

Set: Ice Age Type: Enchantment Rarity: Rare Cost: {3}{B} Whenever you lose life

Set: Conspiracy Type: Legendary Creature — Human Artificer Rarity: Mythic Cost: {1}{U}{U} {3}{U}

Set: Scars of Mirrodin Tokens Type: Token Creature — Soldier Rarity: Common

but I prefer to learn from the failures of others

Set: Commander Anthology Type: Creature — Elf Warrior Rarity: Common Cost: {2}{G}{G} Whenever you cast an Elf spell

Hedron Crab [Zendikar] Urza's Saga Promos Set: Ice Age Type: EnchantmentSet: Zendikar Type: Creature Crab Rarity: Uncommon Cost: {U} Landfall Whenever a land enters the battlefield under your control, target player mills three cards. Hedrons perplex minds both great and small.