Power Spray is an Item that can be played during the opponent's turn to cancel the use of a PokePower, but only if you have Power Spray in hand and 3 or more SP Pokmon in play
They essentially enhance your Pokmon cards in some way
Aside from the threat the +1/+1 counters create themselves, many of the creatures synergize quite well with them
Stall decks are notorious for being strong in the meta and not fun to play against, but this new card will make them even more broken
If those havent been revealed yet, its almost always safer to put down a card from a month without a Bright in it (so not January, March, August, November, or December)
Gaining a level won't remove abilities that a Class had at a previous level