Leave what decklist you run for whatever you choose.
I was opening some ScarVi packs when I came across the absolute unit that is Toxicoak ex. At first glance it isn't a very strong card, dealing 120 damage per hit plus 6 poison damage per turn for 1 Darkness and 2 Colorless Energy. However, I have found a way to make it work. Here's the decklist: Pokémon: 13 1 Hisuian…
Whenever I have a Cape of Toughness attached to a Serperior VSTAR, the effect, +50 max HP, isn't applied. It doesn't matter if it is attached before or after evolution, it doesn't apply.
