Add Bulbasaur, Charmander, and Squirtle to your team as playable foil promo cards, then work on completing your Kanto Pokdex by opening more booster packs from the special Scarlet & Violet151 expansion
So even though it does seem expensive for Giratina to only be able to do 30 hp to each Pokemon of your opponent's for 4 energy, just think if your opponent has 3 Pokemon in play, 1 active and 2 benched, 1 turn of Darkness Lost can do 90 hp with 4 energy cards, which isn't bad at all
Basically, once you get into Gold Star territory, youll know youve got something pretty special on your hands
With Aetherflux Reservoir or Golems Heart in play to offset the life loss, you can draw your whole deck
It also draws you a card on ETB thanks to the partner with mechanic