Umori, the Collector [Multiverse Legends]

Set: Multiverse Legends Type: Legendary Creature — Ooze Rarity: Rare Cost: {2}{B/G}{B/G} 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.