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These don't lock you into specific summoning, allowing them to be used generically for a variety of powerful Xyz and Link Monsters

And there are colorless types that sacrifice power for adaptability

Jodah is a powerful Legends matter Commander, giving you card and mana advantage and huge buffs to your board

From Peasant Cube up to Vintage Cube, Swords to Plowshares will almost always make someones deck and will rarely leave an opponent with a sour taste in their mouth assuming that your Cube isnt loaded up with three- or more-mana creatures that dont generate any value or at least threaten to dramatically alter the game if you untap with them