Omnidimensional Entity

Omni must be your commander, and you must
have an additional commander. You may have
that commander whether it has any abilities that
would let you to have two commanders or not. At
the start of the game, choose a color, a creature
type, and a card type from among artifact,
enchantment, or planeswalker. This card is those
types and that color in all zones. X must be paid
in only colored mana, and X is equal to the mana
value of your other commander. * is equal to the
higher of their power or t