Jhoira's Familiar
Artifact Creature — Bird
Flying
Historic spells you cast cost 
less to cast. (Artifacts, legendaries, and Sagas are historic.)
"You could say it was my pet project." —Jhoira
2/2
イラスト：
Dominaria#220アンコモン英語適正
裁定
2018年4月27日
The last ability of Jhoira’s Familiar doesn’t reduce its own cost while you’re casting it.
2018年4月27日
A card, spell, or permanent is historic if it has the legendary supertype, the artifact card type, or the Saga subtype. Having two of those qualities doesn’t make an object more historic than another or provide an additional bonus—an object either is historic or it isn’t.