Urza's Incubator
Artifact
As this artifact enters, choose a creature type.
Creature spells of the chosen type cost 
less to cast.
"Our recruitment drives are bringing in fewer fresh troops every day. We need a new strategy." —Urza, to Tawnos
Grzegorz Rutkowski
Modern Horizons 3 (MH3)
• #297Rulings
You choose a creature type right as it enters, before any continuous effects are applied or trigged abilities trigger.
(wotc • 2004-10-04)
Multiple Incubators are cumulative.
(wotc • 2004-10-04)
Rulings
You choose a creature type right as it enters, before any continuous effects are applied or trigged abilities trigger.
(wotc • 2004-10-04)
Multiple Incubators are cumulative.
(wotc • 2004-10-04)