At the beginning of your upkeep, activate Hermit Druid by paying {G} and tapping it, reveal cards from the top of your library and then putting them into your graveyard.
Laboratory Maniac triggers, winning you the game.

Win the game

Hermit Druid

Laboratory Maniac

Cast Mana Severance by paying {1}{U}, searching for all lands in your library, exiling them and shuffling your library.
Activate Hermit Druid by paying {G} and tapping it, causing you to mill your entire library.
Draw a card, causing you to win the game due to drawing from an empty library.

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