Urza's Incubator [Commander 2015] Forest Island When Necromancy enters the battlefield

When Necromancy enters the battlefield

(This effect lasts indefinitely

Set: EX: FireRed & LeafGreen Type: Lightning Rarity: Secret Rare Retreat cost: Colorless

" —Warrior's oath common during the Three Kingdoms period

Set: Guru Type: Basic Land — Island Rarity: Rare ({T}: Add {U}

Urza's Incubator [Commander 2015] Forest Island When Necromancy enters the battlefieldSet: Commander 2015 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