This has already demonstrated how high it can go and I plan to buy a lot of copies of this for personal use before I even start to speculate
Darkness calls him out for not understanding how helpless his friends are, and he responds that he isn't as strong as he appears to be and only continues fighting on sheer hope alone
Do that, then move to Step 2
Base Unlimited The Base Unlimited set, released in 1999, has seen a significant increase in value over the years
That's not a terrific cost ratio in and of itself, but for just one more Energy, Blizzard deals 80 damage to your opponent's Active Pokemon, and 10 damage to each of your opponent's Benched Pokemon
Possible packs include Scarlet & Violet sets (Surging Sparks, Prismatic Evolutions, Paldean Fates, 151), Sword & Shield sets, Sun & Moon, and potentially vintage WOTC packs depending on availability