What really catches my attention is that theres blessed few cards that premiered in a Universes Beyond set but went on to get reprints, especially multiple reprints within months of their premiere
Sorcerer Enchanted creature gets +1/+1 and has Whenever this creature attacks, scry 1. Wicked Enchanted creature gets +1/+1 and When this Aura is put into a graveyard from the battlefield, each opponent loses 1 life. Young Hero Enchanted creature has Whenever this creature attacks, if its toughness is 3 or less, put a +1/+1 counter on it. Virtuous Enchanted creature gets +1/+1 for each enchantment you control
11 rotation promises to slow down the format, and Gholdengo ex will be able to squeak back into the format because of this
Gandalf the White doubles every trigger weve looked at for an incredible Panharmonicon effect
The Blue Spirit Flash on only the first creature you cast each turn is still good enough, especially since it applies to each player's turn separately
The player whose turn it is discards down to his or her maximum hand size