companion — each nonland card in your starting deck shares a card type. (if this card is your chosen companion, you may put it into your hand from outside the game for 3 any time you could cast a sorcery.)
as umori, the collector enters the battlefield, choose a card type.
spells you cast of the chosen type cost 1 less to cast.
Umori, the Collector (Halo Foil) from Multiverse Legends