Pikachu exs Circle Circuit attack gets stronger when there are more Pokmon on the Bench, so a good strategy for building a deck around this is to include more Pokmon than usual to make sure you can deal as much damage as possible
(Dont apply Weakness and Resistance for Benched Pokemon.) Pokemon ex rule: When your Pokemon ex is Knocked Out, your opponent takes 2 Prize cards
Top right (Energy cards)
Delve is just going to turn on in these formats because we will fill our graveyard up quite easily with Verdant Catacombs, Lightning Bolt, Thoughtseize, Serum Visions, and the like
I think the Commander that benefits the most from this is Chainer, because he comes with a built-in discard ability that doesnt cost any mana, while also being able to take advantage of the stuff you throw in the graveyard
They make a set together with the third card from earlier in the list