Mana Drain [Iconic Masters] Forest you may add an amount

you may add an amount of {C} equal to the number of creatures you control that share a creature type with it

Set: Pro Tour Promos Type: Legendary Creature — Dragon Rarity: Rare Cost: {3}{G}{W}{U} Flying

Set: Judge Gift Cards 2007 Type: Sorcery Rarity: Rare Cost: {1}{W}{B} Destroy target permanent

"Here sprouted the first seedling of Argoth

Set: Beta Edition Type: Sorcery Rarity: Rare Cost: {1}{W} Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest

Mana Drain [Iconic Masters] Forest you may add an amountSet: Iconic Masters Type: Instant Rarity: Mythic Cost: {U}{U} Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value. Enthusiasm is no match for preparation.