Turn 1 infinite mill all players:
Ancient tomb, Mana crypt, Mana vault, Metalworker, Lightning greaves, Voltaic construct, Pyxis of pandemonium, random artifact.
Play: tomb, crypt, vault --> 6 mana --> Metalworker, boots, equip, tap --> 7 mana ---> Voltaic construct, equip boots (to remove shroud from metalworker) untap metal worker,equip boots to metalworker, tap to generate 4 mana, repeat for infite mana --> Karn, pyxis, turn pyxis into creature, equip boots to give haste, tap, unequip boots, untap, equip boots, tap, repeat till no one has cards left.
Pass the turn.
Just one of the _many_ degenerate things this deck can do.