They keep undying until end of turn, so we could also do some spell casting that involves creature sacrifice, as well as activating abilities
Being able to hit for a solid 100 damage and deal damage to the Bench at the same time is an excellent way to get cards like Cyrus online
its their applications in the formats where theyre relevant that matters
Creativity is what fuels Universes Beyond and justifies its stark break from the reality of Magic, but if Wizards is just going to throw random characters people like onto cards, without any strong creative vision, just because they know people will buy it, then Im afraid to say UB has already run its course
If recasting cheap disruption was a good use case for the card in other formats, imagine how good recasting the likes of Cyclonic Rift will feel
Overall, trainer cards are an integral part of every deck, and some Generation IX trainer cards are regarded as phenomenally important cards