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Urza’s Incubator

As Urza’s Incubator enters the battlefield, choose a creature type.
Creature spells of the chosen type cost {2} less to cast.

Rarity : Rare
Types : Artifact
Artist : Pete Venters
Flavor : "Stop thinking like an artificer, Urza, and start thinking like a father!" —Rayne, chancellor of the Tolarian Academy
Cost converted to mana : 3

Rulings

4 October 2004
Multiple Incubators are cumulative.
4 October 2004
You choose a creature type right as it enters the battlefield, before any continuous effects are applied or trigged abilities trigger.

Azorius Chancery

Azorius Chancery enters the battlefield tapped. When Azorius Chancery enters the battlefield, return a land you control to its owner's hand. {T}: Add {W}{U}.

Angel of Serenity

Flying When Angel of Serenity enters the battlefield, you may exile up to three other target creatures from the battlefield and/or creature cards from graveyards. When Angel of Serenity leaves the battlefield, return the exiled cards to their owners' hands.