Theres a surprising amount of +1/+1 counter synergy between original Ixalan cards like Herald of Secret Streams, Morningtide s Sage of Fables and Simic-sworn merfolk like Vorel of the Hull Clade or Prime Speaker Zegana
Its been stated ad nauseum that multiplayer games, and Commander games in particular, reorient what the most important traits to a deck are
Pokemon is no different. Part of it is just flat out nostalgia
Weve seen reports that Costco is not enforcing quantity limits on these cards, meaning you can stock up on a ton of sets to resell with one trip
Optimus Prime, Hero / Optimus Prime, Autobot Leader +1/+1 counters is a less common theme for Jeskai, but you can pair Optimus Prime, Hero with creatures like Abzan Falconer and Envoy of the Ancestors to gain access to strong keywords, and Lae'zel, Vlaakith's Champion to boost counter production