The Tyrant Couple

Creatures you control have double strike.
{3}{r}{r}: The Tyrant Couple becomes a 5/4 red
Elder Dragon named Teostra, the King with
flying and menace until end of turn.
{3}{u}{u}: The Tyrant Couple becomes a 4/5
Elder Dragon named Lunastra, the Queen with
flying and hexproof until end of turn.