I also really like Garruks Uprising
In terms of gameplay mechanics, amethyst isnt as clear cut as the other colours in the trading card game, but typically revolves around providing players with either ways to benefit themselves or screw over their opponents
Magics Un-sets have always been a bastion of fresh, experimental card design, but it wasnt until Unfinity that said designs actually made their way into constructed legality
This can pull out an instant or sorcery from your graveyard as a 3/3 dork
There are plenty of ways to double up on your instant and sorcery spellsmost notably Zada, Hedron Grinder, a commander who makes dozens of unplayable cards suddenly very strong
If one of the creatures is an illegal target and the other one isn't as The Earth Crystal's last ability tries to resolve, the original distribution of counters applies and the counter that would have been put on the illegal target is lost