Cast Mana Severance for {U} {1} and remove all lands from your library.
Tap and activate Goblin Charbelcher's ability for {3} targeting a player, thus killing them.

Target player loses the game

Mana Severance

Goblin Charbelcher

Cast Mana Severance by paying {1}{U}, searching for all land cards in your library, exiling them and shuffling your library.
Cast Selective Memory by paying {3}{U}, exiling the rest of your library.
Cast Thassa's Oracle by paying {U}{U}.
Thassa's Oracle enters the battlefield, causing you to win the game.

Exile your library

Win the game

Selective Memory

Thassa's Oracle

Cast Mana Severance by paying {1}{U}, searching for all land cards in your library, exiling them and shuffling your library.
Cast Selective Memory by paying {3}{U}, exiling the rest of your library.
Activate Jace's first loyalty ability by putting a loyalty counter on it, causing target player to mill two cards and you to win the game due to drawing from an empty library.

Jace, Wielder of Mysteries

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.
Cast Thassa's Oracle by paying {U}{U}.
Thassa's Oracle enters the battlefield, causing you to win the game.

Infinite self-mill

Hermit Druid

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.

Laboratory Maniac

Cast Mana Severance by paying {1}{U}.
Hive Mind triggers, causing each opponent to create a copy of Mana Severance.
Resolve each opponent's Mana Severance, searching their libraries for all land cards, exiling them and shuffling their library.
Resolve your Mana Severance, exiling no lands cards from your library and shuffling your library.
Cast Selective Memory by paying {3}{U}.
Hive Mind triggers, causing each opponent to create a copy of Selective Memory.
Resolve each opponent's Selective Memory, exiling the rest of each opponent's library.
Resolve your Selective Memory, exiling no nonland cards from your library and shuffling your library.

Cast any number of spell(s) from opponents' libraries

Exile all nonland cards from opponents' libraries

Exile each opponent's library

Opposition Agent

Hive Mind

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.
Activate Jace's first loyalty ability by putting a loyalty counter on it, causing target player to mill two cards and you to win the game due to drawing from an empty library.

Cast Mana Severance by paying {1}{U}.
Hive Mind triggers, causing each opponent to create a copy of Mana Severance.
Resolve each opponent's Mana Severance, searching their libraries for all land cards, exiling them and shuffling their library.
Resolve your Mana Severance, exiling no lands cards from your library and shuffling your library.
Cast Mind Grind by paying {1}{U}{B}.
Hive Mind triggers, causing each opponent to create a copy of Selective Memory.
Resolve each opponent's Selective Memory, revealing the rest of each opponent's library then put those cards into their graveyard.
Resolve your Selective Memory, revealing your cards until you reveal one land card from your library then puts all revealed cards to your graveyard.

Mill an opponent library

Mind Grind

Cast Mana Severance by paying {1}{U}.
Hive Mind triggers, causing each opponent to copy Mana Severance.
Resolve each opponent's Mana Severance, searching for and exiling all land cards from their libraries.
Resolve your Mana Severance, choosing not to exile any land cards from your library.
Move to your combat step.
Attack with Umbris.
Umbris triggers, creating a token copy of Umbris for each opponent you have, with each token tapped and attacking a different opponent.
Put all but one Umbris into your graveyard due to the legend rule.
Umbris triggers for each Umbris token that enters and each Umbris token triggers for itself and each other Umbris that enters.
Resolve the Umbris triggers, revealing no lands from opponent libraries and exiling each opponent library.

Near-infinitely large Umbris

Umbris, Fear Manifest

Blade of Selves

Cast Mana Severance by paying {1}{U}.
Hive Mind triggers, causing each opponent to copy Mana Severance.
Resolve each opponent's Mana Severance, searching for and exiling all land cards from their libraries.
Resolve your Mana Severance, choosing not to exile any land cards from your library.
Activate Umbris by paying {1}{U}, blinking Umbris.
Umbris triggers, revealing no lands from an opponent library, exiling their library.
Repeat from step 5 for each opponent.

Deadeye Navigator

Cast Mana Severance by paying {1}{U}.
Hive Mind triggers, causing each opponent to copy Mana Severance.
Resolve each opponent's Mana Severance, searching for and exiling all land cards from their libraries.
Resolve your Mana Severance, choosing not to exile any land cards from your library.
Activate Chainer by paying {B}{B}{B} and three life, returning a creature card from your graveyard to the battlefield as a black Nightmare in addition to its other creature types.
That creature enters the battlefield, triggering Umbris.
Resolve the Umbris trigger, revealing no lands from an opponent library, exiling their library.
Repeat from step 5 for each opponent.

Chainer, Dementia Master

Cast Mana Severance by paying {1}{U}.
Hive Mind triggers, causing each opponent to copy Mana Severance.
Resolve each opponent's Mana Severance, exiling all lands from their libraries.
Resolve your Mana Severance, choosing not to exile any lands from your library.
The next time you draw a card, Sphinx's Tutelage triggers, causing an opponent to mill two cards.
Because Painter's Servant will force the cards to share a color, and they will not be lands due to the opponent having no lands in their library, Sphinx's Tutelage will continue to repeat the process until the opponent's library is empty.

Infinite mill for target opponent every time you draw a card

Sphinx's Tutelage

Painter's Servant

Cast Mana Severance for {1}{U}, exiling all lands in your library.
Cast Balustrade Spy for {3}{B}, milling your library.
Cast Unburial Rites for {3}{W}, returning Thassa's Oracle to the battlefield.
Thassa's Oracle ETBs, winning the game.

Balustrade Spy

Unburial Rites

Cast Mana Severance for {1}{U}, exiling all lands in your library.
Activate Undercity Informer for {1}, milling your library.
Cast Unburial Rites for {3}{W}, returning Thassa's Oracle to the battlefield.
Thassa's Oracle ETBs, winning the game.

Undercity Informer

Cast Mana Severance by paying {1}{U}, exiling all lands from your library.
Cast Recross the Paths by paying {2}{G}, revealing your entire library and reordering it with Collected Company on top and Thassa's Oracle and Undercity Informer directly below it.
Draw a card by any method.
Cast Collected Company by paying {3}{G}, putting Thassa's Oracle and Undercity Informer from your library onto the battlefield.
Thassa's Oracle triggers.
In response to the trigger, activate Undercity Informer by paying {1} and sacrificing itself, milling your library.
Resolve the Thassa's Oracle trigger, winning the game.

Combos with "Mana Severance"