While Eldraine doesn't generally have inherently overpowered mechanics the one exception that every Magic player should watch out for are Adventures, which allow for a large degree of inherent card advantage
When I roll a die because of the activated ability, does that die roll do anything
Daze is probably over the line as well, so Misdirection is the next best thing
At the beginning of your end step, if two or more creatures entered the battlefield under your control this turn, you draw a card and gain 2 life
If Hallowed Moonlight is a decent sideboard card in Modern, why not this
The new Policy defined a category of cards, called "Reserved Cards," that would never be reprinted, in either black or white border, in functionally identical form