Needing to supply a four-color mana base is a bit rough, but the deck is worth it
Altogether, Deathrite Shaman simply offered too much for any deck to pass up, eventually leading to its banning in both Modern and Legacy.
If another creature enters the battlefield as or becomes a copy of Pirated Copy, it will copy whatever Pirated Copy is copying, be a Pirate in addition to its other types, and have "Whenever this creature or another creature with the same name deals combat damage to a player, you draw a card." If Pirated Copy doesn't enter the battlefield as a creature (such as by copying an artifact or land that became a creature), it doesn't become a Pirate, though it still has the granted triggered ability
That smells of cheap, quick spells
Its a pretty good token producer if it survives combat
Lightning Helix on a huge body with escape is tempting, but its just a question of finding a good home for it