mtg mh3 eldrazi commander deck Collector's Edition – Champion Card Collector frame card of rarity Rare or higher and 1 Traditional Foil alt Eldrazi Incursion Full Deck Reveal!

This is only the first idea I've come up with, but truly any commander that can benefit from being copied should at least consider this card

Nissa, Worldsoul Speaker $10.36 Energy isnt in the main Aetherdrift set, but Nissa, Worldsoul Speaker comes in the Living Energy precon and is a good energy generator and energy sink

Igneous Inspiration 7.5 Volcanic Hammer that learns for one extra mana

This is also known as morphing a creature, or sometimes as unmorphing depending on which of the two parts you consider to be the actual morph

They deliberately keep things simple to show you the ropes, and are a great foundation on which to build from