The Skate is a perfect complement to decks that run Proliferate cards like Contagion Engine. New 4-color Legendary Creature and Commander Atraxa, Praetors' Voice will be very happy to have this in her deck. as well. Really, I see this becoming a staple in any counter-happy deck running blue. Commanders more than happy to have Deepglow Skate include Vorel of the Hull Clade, Ezuri, Claw of Progress, Marchesa, the Black Rose, and many others.