This is one of the biggest misconceptions about T1; the idea that you can only play if you own the Power10 cards. Of course, you won't be able able to play decks such as wMUD, Keeper, and other decks requiring most, if not all, of the Power. However, there are other decks that can run fine without Power.
Mud and keeper
are two of the best decks in the format. so not being able to play those does hurt
your ability to play in serious tournements. The decks that run ok without power
are not as fast or consistent as the ones fully powered.
Please try to refrain from using dumb abvreviations, thanks.