Beast of Burden [Urza's Legacy Promos] Magic 2010 (Each {B} in the mana

(Each {B} in the mana costs of permanents you control counts toward your devotion to black

Set: Betrayers of Kamigawa Type: Instant — Arcane Rarity: Rare Cost: {X}{U}{U} You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost

Voice of the Argoth forest

"On Providence

Beast of Burden [Urza's Legacy Promos] Magic 2010 (Each {B} in the manaSet: Urza's Legacy Promos Type: Artifact Creature Golem Rarity: Rare Cost: {6} Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield. "If it is meant to be nothing but a machine," Karn finally asked Jhoira, "why did Urza build it to be like me?"