After the subgame ends, the winner searches his or her library for two cards, puts those cards into his or her hand, then shuffles his or her library.
Donatello has the ability to stack permanent copies of artifacts, which in a ninja typal deck means multiples of Adaptive Automaton, Roaming Throne and Heirloom Blade
Youd probably get sick of it after five or ten runs, so I wouldnt necessarily recommend Quick Draft for dedicated, high-volume players
The idea is to play this in a Black deck that has enough mana with Cabal Coffers and Urborg, Tomb of Yawgmoth or Nykthos, Shrine to Nyx or Caged Sun to fill this out with tons of X mana to make all of that mana and force enough for your foes to lose life, discard their hand and be denuded of their stuff and then you can, slowly win the game from there after removing their life, hand and stuff so that you have a slower game win from there with anything like Commander damage or finishing off someone with a lower post-Torment life
It doesnt specify that the creature needs to tap for mana, which means Eldrazi Scion and Eldrazi Spawn tokens benefit from the buff