Aether

Aether is indestructible.
Whenever equipped creature attacks, you may create a token that's a copy of that creature
(Legendary rules doesn't apply for this copy.) that's tapped and attacking that player or a planeswalker he or she controls.
Exile the token at end of combat.
Equip {5}
The Aether is fluid and everchanging. It changes matter into dark matter. It seeks out host bodies, drawing strength from their life-force.