Necrotic Ooze + Knacksaw Clique + Krosan Restorer

Necrotic Ooze

Knacksaw Clique

Krosan Restorer

How it works

1. Activate Krosan Restorer threshold ability with Necrotic Ooze to untap up to three lands.
2. Activate Knacksaw Qlique with Nectrotic Ooze to untap it, and have target opponent remove the top card of their library from the game.
3. Until end of turn you may play that card.
4. Continue looping as long as needed, generating infinite mana among lands you control.
5. From here, you could either cast every card from your opponent' libraries, or Move to your next turn and win from them decking out.