mtg green mutate cards Elite Simic Deck - Blue - Very Powerful - Modern Legal - Custom Built - Magic The Gathering - Migratory Greathorn from Ikoria Spoiler

The CMC restriction ensures that he doesnt scale too well to Commander, and only triggering off of legends, artifacts and sagas means that its really hard to build around triggering his ability consistently while also having relevant creatures to return

The attribution and the back link to OpenArt is required

To a lesser degree, Sandwurm Convergence and Cacophony Unleashed will also provide a ton of recurring power that they should be able to help you grind out a win

Lonis, Genetics Expert Lonis, Genetics Expert lends itself well to infinite combos with cards like Krark-Clan Ironworks and Extruder

Unfortunately cards like Scarab Feast (and Surgical Extraction, and so on) are not card advantage