The 'Mutation' spell applies a random number of random effects to the affected unit, and can do anything from turning them into a greatly-empowered hero, to turning them into a withered, cannibalistic husk
You could even use a bunch of these curse cards to create a curse-themed deck with Lynde, Cheerful Tormenter
We are here to do cube things and so the most important element of this archetype becomes how do we protect, find and recur our three key enablers
It stalls your opponents and denies them resources
Our last attempt at a scrying-matters card didnt work out too well (The Temporal Anchor), but Planetarium of Wan Shi Tong has much higher upside: It lets you cast spells for free rather than just stockpile extra cards
Numa is a mana sink that grows your army, and Miara is a card draw engine in the command zone that simultaneously opens up real aristocrats support in Elf tribal