The Indifference

The Indifference can be your commander.

When a creature an opponent controls enters, you may pay {x}, where X is it's mana value. If you do, create a copy of that creature with "When this creature dies exile it instead".

Red creatures you control have haste. Black creatures you control have deathtouch. white creatures you control have vigilance. green creatures you control have trample. blue creatures you control have "Ward: return a creature you control to your hand".