The Real Omnitrix

Indestructible

Creatures you own named Ben 10, Omniversal Hero
have "{x}: Exile this creature. Then return it to the
battlefield as a copy of up to one Alien permanent
card you own in exile with mana value X until your
next turn, except its name is still Ben 10,
Omniversal Hero. It gains haste."

{t}: You may play an Alien card you own from
exile this turn.