dr who mtg cards Doctor Commander Deck All 4 Decks you may exile a card from your hand with a number of time counters on it equal to its mana value The Tenth Doctor - Universes

So unless you're running Moonmist in a Tera deck - which I've been reminded is five color, so it's at least possible if not good - you'll need some other five color MTG commander, which isn't a transformer, to lead your deck

1 Akoum Refuge

These are: Black Lotus, The Moxen, Time Walk, Timetwister, and Ancestral Recall

Sigarda wont be the only one weeping should this melded monstrosity ever hit the table

For seven mana you get a 7/5 artifact creature that is hard to block thanks to menace and helps stabilize you with lifelink

When you add in land-searching options like Town Greeter and the landcyclers, as well as four-mana ramp spells like Reach the Horizon, getting the mana together to cast Omega, Diamond Weapon or Coliseum Behemoth is a question of when, not if