It remains on the stack until its countered, it resolves, a rule causes it to be removed from the stack, or an effect moves it elsewhere
Your chances for each in place of the foil common are: Sol Ring (Human): Less than 0.3% (1 in 333 packs) Sol Ring (Dwarven): Less than 0.25% (1 in 400 packs) Sol Ring (Elvish): Less than 0.1% (1 in 1,000 packs) Sol Ring (Double Rainbow Foil, Human): Less than 0.03% (1 in 3,333 packs) Sol Ring (Double Rainbow Foil, Dwarven): Less than 0.025% (1 in 4,000 packs) Sol Ring (Double Rainbow Foil, Elvish): Less than 0.01% (1 in 10,000 packs) Your chance of opening any form of a Ring of Power is 0.715%
Its a mix of removal and reanimation, and even in Standard, you can use this card with cheap 4-power creatures, like Monoist Sentry or Sunset Saboteur
Besides some random, unpredictable restocks, most Pokmon Center products are one-and-done