Revel in Riches [Ixalan Prerelease Promos] Scars of Mirrodin Promos You may spend mana as

You may spend mana as though it were mana of any type to cast creature spells

They become 6/6 Elemental creatures

Set: Beta Edition Type: Creature — Goblin Rarity: Rare Cost: {1}{R}{R} Other Goblins get +1/+1 and have mountainwalk

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{B}{B} Whenever a creature enters the battlefield

Revel in Riches [Ixalan Prerelease Promos] Scars of Mirrodin Promos You may spend mana asSet: Ixalan Prerelease Promos Type: Enchantment Rarity: Rare Cost: {4}{B} Whenever a creature an opponent controls dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") At the beginning of your upkeep, if you control ten or more Treasures, you win the game.