The 60-card minimum means that youll need to build out a couple of different strategies in your deck, and if you have more in your deck (if there are 204 cards in Chapter 1, you could have up to 816 in your deck, after all) then youll need to strategise even more
You play them in the same way you play other cards that fit multiple roles, to smooth out your ratios and effects
Panoptic Mirror-Timewalk 5/10 In a powered cube this is a seven mana combo, unpowerd it becomes ten although you can still do it just as quickly (assuming you are not ramping into the Panoptic Mirror with something like a Mana Vault)
Its attack, Hyrdo Knuckle, costs one Fighting Energy and two Colorless Energy
(Note that this is something design would do
Lets have a look, and see how the cards themselves stack up