Urza's Incubator [Commander 2015] Worldwake Promos You can only use this

You can only use this effect of "Glass Slippers" once per turn

−7: Put any number of cards from your hand onto the battlefield face down

Set: Tenth Edition Type: Legendary Creature — Wizard Rarity: Rare Cost: {3}{U}{U}{U} {T}: Draw three cards

Set: Duelist Saga Card type: Quick Play Spell Rarity: Ultra Rare Target 1 "Stardust" Synchro Monster you control

the ATK of the selected monster is halved and it can attack twice during Battle Phase

Urza's Incubator [Commander 2015] Worldwake Promos You can only use thisSet: 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