Thraxana, Obliterator

Flying, Haste, Trample, Infect, Hexproof, Indestructible

When Thraxana, Obliterator enters the battlefield, gain control of up to 6 target creatures your opponents control until end of turn. Those creatures gain Haste, Trample, and get +X+X, where X is the number of dragons you control. After your first combat phase, there is an additional combat phase.