These cards are great because they require your opponents to use up one of their valuable removal cards/abilities or seriously ration mana for casting and attacking
Esper colors is kinda awkward for some of the better Equipment-based decks but it might not be a problem
Breya is a four mana White, Blue, Black, and Red 4/4 that enters the battlefield and brings two 1/1 flying Thopter tokens with them
Flower // Flourish Everyone loves them some mana land grabbing, enter this hybrid one-drop sorcery that will tutor for a basic Forest or Plains and put it in your hand, or you can pump your team for +2/+2, no evasion, for six mana, this is really all about that studly first one that can get Forests with White mana, or vice versa
You'll always open a traditional foil mech basic land in The Brothers' War Collector Boosters
In Wilds of Eldraine, Rick will be getting reprinted with a Universes Within variant