Crystal cards were able to change their energy type to match an attached energy card, and only appeared in the Pokmon TCGs e-Card expansions from 2002 and 2003 - named for their compatibility with the e-Reader peripheral for the Game Boy Advance and Nintendo GameCube
With that being said, I did have a lot of fun playing Phantom Premonition, and I think I spent a bit too much time playtesting it
Perhaps the biggest failing of Commander 2018 (last year's decks) was that the decks contained basically zero good lands
The accuracy breakdown by pillar is similar to sports cards: centering 95%+, corners 90%+, edges 85%+, and surface 80%+
Gifted Aetherborn was an embarassing trap of a card to play when it was in Standard, and I dont think that has really changed
There will be a board wipe after youve played your mana rocks, and getting an instant board by cashing this in is a nice trade, and one Im happy to make