Kusham, The Beast of Surprise

Flash.
Whenever Kusham, The Beast of Surprise enters the battlefield swap a random creature you control with a random creature your opponent controls. If your opponent does not control a creature, put a 7/7 green Wolf creature token onto the battlefield under their control and swap it with a random creature you control instead.
"Humans never know what is going to happen. But they carry on anyway. I like that." -Kusham.