Olive Rover

Trample
{5}, Exile Olive Rover, Lapis Rover, Milky Rover,
Sable Rover and Scarlet Rover you control:
Create Rainbow Rover, a 6/6 Construct artifact creature token with flying, vigilance, trample, lifelink, and haste that's all colors. When that
token leaves the battlefield, return all cards exiled
with Rainbow Rover except Rainbow Rover to
the battlefield tapped under their owners'
control.