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Thoughtseize is also great against Mono-Green Devotion if you can take their big payoff before they can cast it

If, for every integer N, a line of play exists that would allow your deck to deal at least N damage within the one-turn window, subject to the previous rules, then your deck is said to contain an unlimited loop (in other words, it "goes infinite"), and does not qualify for consideration here

Do it first

On the one hand, this can obviously be incredibly useful, as it allows you to cheat out massive threats early

Players can attack their opponents active Pokmon - as well as their supporter Pokmon - once per turn, with Pokmon fainting if their health-point total hits zero