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

instead of just being artifacts, all equipment cards are actually artifact creatures instead

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

Cheap spells and cantrips work really well with Talrand as a cheap way to make more creatures

The new franchises making their debut in Shimmering Skies are Wreck-It-Ralph and Frozen 2

A mass return for all artifacts and enchantments