mtg elf commander deck EDH - Custom Built - Elite - - King Théoden How to Build an Elf

They're super rare

Also, "The Rock" style decks have historically had issues with having an abundance of narrow cards and a need to draw the right ones in the right matchups, so a Temple is a particularly good fit for these decks

Fits standard size 12 Booster Pack English MTG Collector Booster Boxes

Keep the serialized cards all good and release a version, maybe where just the Chocobos feathers are gold foil, and have it be unserialized

There are a ton of great decks out there that this Servant can aid

It is the ongoing nature of the life gain combined with its cheapness that make it so dangerous for aggressive decks