return a card from exile mtg Ephemerate [Modern Horizons] All cards will be carefully packed for safe transit Pull from Eternity · Time

Kaheera, the Orphanguard Kaheera, the Orphanguard is one of the companions you see more often in Constructed formats

(By the way, cards with cheaper alternate play costs like Avatar of Fury will still trigger Kalemne.) There are multiple cards from Oath of the Gatewatch that really seem useful for Commander, generally, and Kalemne, specifically

Trample, hexproof Creature - Dinosaur Color tag templates(None) Elder Gargaroth Vigilance, reach, trample Whenever this creature attacks or blocks, choose one Create a 3/3 green Beast creature token

Marwyn is a solid commander for Mono Green Elf Tribal if you prefer ramp in your command zone rather than protection/finisher like Ezuri, Renegade Leader

Cards shown in image may vary