Once per turn, when an attack is declared involving a monster you control and an opponent's monster: You can activate this effect
Because you don't need a good creature for her ability to be impactful, just about any non-legendary creature will do
Why Buy From Monmouth Cards
That doesn't sound like much, but, for Basic Pokmon with low HP totals, it stacks up fast - and the only ways to remove the Poisoned condition are to retreat the Pokmon to your Bench, evolve it, or use an ability or trainer that counters Poisoned
This burn spell can do a serious number on most anything that could stand against it, late enough in the game, and being that it's in a cycling deck it's not impossible to be able to dig deep for it in your deck
This is one journey you won't want to blink while taking