Since it's a non-Human, you can mutate Animar, Soul Of Elements, and give the creature protection from white and black, two of the colors with the most removal spells
Memory Guardian can easily become a 3/4 flier for one, which is great even by old Affinity standards
The list of nonbasic land types in the reminder text is exhaustive as of the release of Modern Horizons The full list of land types can always be found in the Comprehensive Rules of Magic
Llanowar Elves and Rampant Growth were staples in my decks
Don't sleep on the instant status here either
At minimum you'll be paying 3 mana to save your commander, draw and discard a card which feels like a fair deal for its mana cost and I can see many Dimir graveyard, discard, reanimator or Izzet/Grixis wheel deck slot this card for its instant speed potential