To give perspective, one of the stronger attacker in the game at the time, Hitmonchan, was able to deal 20 or 40 damage max at a cost of three Energy, thus taking several turns to KO Chansey and Charizard
More powerful spells require larger amounts and more specific combinations of mana
Also, artifact animators like Donatello, Mutant Mechanic, and Karn, Silver Golem make sure your equipment cards dont just sit on the battlefield
If we had infinite time, we could try every card in the set and make sure they all play as they read, but time is finitie, so we need to decide where to focus our attention, and that's what these reviews hope to serve as
And you can protect one of your own with a cool regeneration shield, which is pretty rare these days to see