Urza's Incubator [Commander 2015] Core Set 2019 Prerelease Promos Whenever another creature enters the

Whenever another creature enters the battlefield

who did in Alrok

you may pay {U}{U}{U}

Set: Champions of Kamigawa Type: Instant Rare Cost: {3}{U} Search your library for up to four cards with different names and reveal them

Set: Urza's Destiny Type: Enchantment Rare Cost: {4}{B}{B} Skip your draw step

Urza's Incubator [Commander 2015] Core Set 2019 Prerelease Promos Whenever another creature enters theSet: Commander 2015 Type: Artifact 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