What makes these Commander Precons special, in my opinion, is the creature types that are featured
(If a creature has multiple instances of prowess, each triggers separately.) Whenever you cast a noncreature spell, target creature you control can't be blocked this turn
Were there new treatments we could explore
Hydras are the perfect tribe to do this with, as their flexible casting costs means you can always adjust your newest creature to be stronger than the last one you cast, triggering Selvala and drawing you an extra card
(2023-06-16) If Arwen, Weaver of Hope and another creature you control enter the battlefield at the same time, Arwen's ability won't cause that creature to enter with additional +1/+1 counters on it
This is the case with all games, but it is certainly an issue in Scarlet & Violet due to the forced sharing of experience