The Wandering Minstrel (Borderless)

Lands you control enter untapped. The Minstrel's Ballad — At the beginning of combat on your turn, if you control five or more Towns, create a 2/2 Elemental creature token that's all colors. 3WUBRG: Other creatures you control get +X/+X until end of turn, where X is the number of Towns you control.