You can use his Unearthly Power ability to discount your expensive cascade spells while creating more bodies when he deals combat damage
These are purely optional, and there are plenty of cheaper generic options, but if one of these items suits the cards in your favourite deck, its fun to coordinate
It has a base power and toughness of 1/1, but by paying one mana and sacrificing a creature or artifact, it will get a +1/+1 counter
Molten-Core Maestro The fact that Molten-Core Maestros opus ability can give you enough mana to cast your next big spell and potentially chain big spells together puts it in combo territory, and it seems pretty easy to go off with any buyback card
This incredible ruby card is the single most pricey card in The First Chapter in terms of ink, requiring a huge nine ink to even get onto the table
Leviathan (from Final Fantasy 15): Presented as a Saga creature, reflecting its temporary yet powerful summon nature in Final Fantasy, a mechanic perfectly fused with Magic: The Gathering