3 has potential as a spellslinger/burn commander, though it faces stiff competition from Valgavoth, Harrower of Souls and Tor Wauki the Younger
Disney has had a lot of failures in the game space, and even though this is very different in nature from something like Disney Infinity, the outcome could have been the same
Getting to tap down your opponents team is a nice effect to have, but not one worth playing without wanting the other mode
Exerting, Rushing, bouncing, and generally frustrating your opponents plans are all brought up to are we there yet levels of annoying fun
Six mana is a lot to nab a creature that the Crystal has exiled, but there are few times where doing so will be a bad thing
It has some control elements, Lore removal, and a Location-oriented style but it doesnt focus on a single one meaning you end up with some confused hands that contain pieces of all three