Draw three, discard two is really not that bad
Even if youre not hitting the ideal curve of larger creatures each turn, Watchful Radstag is still a potent Elk generator
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
If you can get multiple mid-sized creatures onto the board each turn, you're going to easily pull ahead and get to do lots of fun green things
Dont like the creatures that you have
You can run this leading a Warrior deck or in the 99