If i use Absols Primes attack am i able to place a Legend Piece into the lost zone to do Absols attack and does A Legend Piece count as a Pokemon in the lost zone?
Yes, Absol can put a Legend Piece into the Lost Zone for its attack.
Yes, a Legend card counts as a Pokemon card in the Lost Zone.
But it doesn't count as a Pokemon in terms of a card like Mew Prime being able to copy attributes from it.