tales of middle earth mtg commander decks MTG: The Lord the Rings of Middle-Earth [Set Spend this mana only to cast a creature spell of the chosen type The Lord of the Rings:

You can find all of the cards in the soft glow, Ninja, Samurai, Phyrexian, and borderless treatments in Set, Draft, and Collector Boosters, in both non-foil and traditional foil

Practically: Emerald decks gain Monsters Inc disruption tools, Sapphire support decks gain Carl and Dug for utility, Ruby aggro gains Meilin Lee as a possible threat

It also offers a firebreathing ability which is sure to ask questions in a pod of Commander

Those are all interesting, but if you roll a natural 20, you get to search your library for a card of your choice and then put it into play if its an artifact, or in your hand if its anything else