The price makes it feel more prohibitive, but it also keeps it from being a feature in every MTG Commander deck in existence
NeoSatoshi identifies each card and fills in all the details: name, set, number, rarity, finish
Avatar Kuruk Emrakul, the Aeons Torn Emrakul, the Promised End Eon Frolicker Kang the Conqueror Lighthouse Chronologist Medomai the Ageless Sage of Hours Timestream Navigator Ultimecia, Omnipotent Wanderwine Prophets Wormfang Manta
That happens because decks with fewer colors have fewer problems with color fixing, while decks with many colors need more lands so that they can consistently find all their colors and avoid color screw, the lack of having the correct color to play certain spells
BPhillipYork: It's a mana dork that also mana fixes for your commander, so it just makes any green that wants to ramp out creatures smoother and more consistent, and it makes your commander uncounterable or some big legendary spells like Karn's Temporal Sundering or, Planeswalkers, which will get to hit the board then do their thing without a chance for interaction
Cards like Spirited Companion are natural 2-for-1s, and set you up with the perfect card for blink and recursion effects