Zendikar Resurgent [Oath of the Gatewatch Prerelease Promos] Human Artificer Overload {5}{R}{R}{R} (You may cast

Overload {5}{R}{R}{R} (You may cast this spell for its overload cost

The same is true for artifacts and enchantments

Rhonas the Indomitable can't attack or block unless you control another creature with power 4 or greater

where X is the number of Rats you control

Set: Alpha Edition Type: Artifact Rarity: Rare Cost: {4} Whenever a land is put into a graveyard from the battlefield

Zendikar Resurgent [Oath of the Gatewatch Prerelease Promos] Human Artificer Overload {5}{R}{R}{R} (You may castSet: Oath of the Gatewatch Prerelease Promos Type: Enchantment Rarity: Rare Cost: {5}{G}{G} Whenever you tap a land for mana, add one mana of any type that land produced. (The types of mana are white, blue, black, red, green, and colorless.) Whenever you cast a creature spell, draw a card.