Urza's Incubator [Commander Anthology Volume II]Set: Commander Anthology Volume II Type: Artifact Rarity: Rare Cost: {3} As Urza's Incubator enters the battlefield, choose a creature type. Creature spells of the chosen type cost {2} less to cast. "Stop thinking like an artificer, Urza, and start thinking like a father!" Rayne, chancellor of the Tolarian Academy

(Piles can be empty

Set: Fifth Edition Type: Creature — Merfolk Rarity: Rare Cost: {U}{U} Other Merfolk get +1/+1 and have islandwalk

or blue creature

you choose one of them

Remove six +1/+1 counters from Karlov of the Ghost Council: Exile target creature

the Dimir pull nine puppet strings

Set: Urza's Saga Type: Sorcery Rarity: Rare Cost: {R} Search your library for a card

Flashback—Tap an untapped white creature you control

then I will fight forever

Set: Beta Edition Type: Enchantment Rarity: Uncommon Cost: {2}{B} White spells cost {3} more to cast

Set: Beta Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{U}{U} Enchant creature

It can't be blocked this turn