I like the addition of the ancillary card for those players who dont want to buy every planeswalker deck, etc
However, while Cube environments often feature mostly cards that see or have seen play in Constructed, Eternal Masters likely has many cards that most Magic players have probably never touched before especially not in a Limited environment
Specifically, I would recommend Arachnogenesis, Awakening Zone, Chasm Skulker, Fable of Wolf and Owl and Mycoloth for that
If you've read Galaxy in Flames then you'll get a kick out of a tutorial campaign that puts you through the Fall of Isstvan III, and if you have no idea what I'm talking about then Legions probably isn't for you
Known for its adaptability, Eevee has an unstable genetic structure that allows it to evolve into multiple different forms.
You need to learn to play a control strategy and pick off key pieces