Cast Walk the Aeons by paying {4}{U}{U}, sacrificing Mystic Sanctuary and two other Islands, causing you to take an extra turn after this one and returning Walk the Aeons to your hand.
Play any Island except Mystic Sanctuary from your graveyard.
When the land enters the battlefield, Aesi triggers twice, allowing you to draw two cards.
Move to your next turn.
Cast Walk the Aeons by paying {4}{U}{U}, causing you to take an extra turn after this one.
Play any Island except Mystic Sanctuary from your graveyard.
When the land enters the battlefield, Aesi triggers twice, allowing you to draw two cards.
Play Mystic Sanctuary from your graveyard.
When Mystic Sanctuary enters the battlefield, it and Aesi trigger twice.
Resolve the first Mystic Sanctuary trigger, putting Walk the Aeons on top of your library from your graveyard.
Resolve the second Mystic Sanctuary trigger, doing nothing.
Resolve the Aesi triggers, causing you to draw Walk the Aeons and up to one additional card from the top of your library.
Move to your next turn.
Repeat.

Infinite turns

Aesi, Tyrant of Gyre Strait

Walk the Aeons

Mystic Sanctuary

Ancient Greenwarden

Cast Walk the Aeons by paying its mana cost, causing you to take an extra turn after this one.
Activate Dust Bowl by paying {3}, tapping it and sacrificing Mystic Sanctuary, destroying a nonbasic land.
Play Mystic Sanctuary from your graveyard.
When Mystic Sanctuary enters untapped, it triggers, putting Walk the Aeons from your graveyard onto the top of your library.
Move to your next turn, drawing Walk the Aeons during your draw step.
Repeat.

Skip your draw steps

Near-infinite extra turns

Dust Bowl

Activate a Forest you control by tapping it, adding {G}.
Cast Summer Bloom by paying {1}{G}, allowing you to play three more lands this turn.
Play Mystic Sanctuary either from your hand or from your graveyard.
Mystic Sanctuary enters the battlefield, triggering its ability twice, putting Summer Bloom on top of your library from your graveyard.
Activate Mystic Sanctuary by tapping it, adding {U}.
Activate Waterlogged Grove by paying {1}, tapping and sacrificing it, causing you to draw Summer Bloom from the top of your library.
Activate Squandered Resources by sacrificing Mystic Sanctuary and a Forest, adding {G}{U}.
Play the Forest and Waterlogged Grove from your graveyard.
Repeat.

Infinite draw triggers

Infinite landfall triggers

Infinite magecraft triggers

Infinite mana lands you control can produce

Infinite storm count

Squandered Resources

Summer Bloom

Waterlogged Grove

Activate Mystic Sanctuary by tapping it, adding {U}.
Cast Walk the Aeons by paying its mana cost, causing you to take an extra turn after this one.
Cast Ghostly Flicker by paying {2}{U}, blinking Mystic Sanctuary and Greenwarden of Murasa.
When Greenwarden of Murasa and Mystic Sanctuary enter the battlefield, they trigger.
Resolve the Greenwarden of Murasa trigger, returning Ghostly Flicker from your graveyard to your hand.
Resolve the Mystic Sanctuary trigger, putting Walk the Aeons from your graveyard onto the top of your library.
Move to your next turn, drawing Walk the Aeons during your draw step.
Repeat.

Ghostly Flicker

Greenwarden of Murasa

Activate a Forest you control by tapping it, adding {G}.
Cast Summer Bloom by paying {1}{G}, allowing you to play three more lands this turn.
Play Mystic Sanctuary either from your hand or from your graveyard.
Mystic Sanctuary enters the battlefield, triggering its ability twice, putting Summer Bloom on top of your library from your graveyard.
Activate Mystic Sanctuary by tapping it, adding {U}.
Activate Nurturing Peatland by paying {1}, tapping and sacrificing it, causing you to draw Summer Bloom from the top of your library.
Activate Squandered Resources by sacrificing Mystic Sanctuary and a Forest, adding {G}{U}.
Play the Forest and Nurturing Peatland from your graveyard.
Repeat.

Nurturing Peatland

Activate a basic Forest you control by tapping it, adding {G}.
Cast Summer Bloom by paying {1}{G}, allowing you to play three more lands this turn.
Play Mystic Sanctuary either from your hand or from your graveyard.
When Mystic Sanctuary enters the battlefield, it and Tireless Tracker's first ability trigger twice.
Resolve both Tireless Tracker triggers, creating two Clue artifact tokens.
Resolve the Mystic Sanctuary triggers, putting Summer Bloom on top of your library from your graveyard.
Activate Mystic Sanctuary by tapping it, adding {U}.
Activate Squandered Resources by sacrificing Mystic Sanctuary, a basic Forest and any other land you control, adding {1}{G}{U}.
Play the Forest and another land from your graveyard.
When the lands enter the battlefield, Tireless Tracker's first ability triggers four times, creating four Clue artifact tokens.
Activate a Clue by paying {2} and sacrificing it.
Tireless Tracker's second ability triggers, putting a +1/+1 counter on it.
Resolve the Clue ability, causing you to draw Summer Bloom from the top of your library.
Repeat.

Infinite Clue tokens

Infinite card draw

Infinite +1/+1 counters on a creature

Tireless Tracker

Activate a basic Forest you control by tapping it, adding {G}.
Cast Summer Bloom by paying {1}{G}, allowing you to play three more lands this turn.
Play Mystic Sanctuary either from your hand or from your graveyard.
When Mystic Sanctuary enters the battlefield, it triggers twice, putting Summer Bloom on top of your library from your graveyard.
Activate Mystic Sanctuary by tapping it, adding {U}.
Activate Cryptic Caves' second ability by paying {1}, tapping and sacrificing it, causing you to draw Summer Bloom from the top of your library.
Activate Squandered Resources by sacrificing Mystic Sanctuary and a basic Forest, adding {G}{U}.
Play the Forest and Cryptic Caves from your graveyard.
Repeat.

Cryptic Caves

Cast Enter the Unknown either from your hand by paying {G} or from the top of your library by paying 1 life, causing a creature you control to explore and allowing you to play an additional land this turn.
Play Mystic Sanctuary either from your hand or graveyard.
When Mystic Sanctuary enters the battlefield untapped, it triggers twice, putting Enter the Unknown from your graveyard onto the top of your library.
Activate Mystic Sanctuary by tapping it, adding {U}.
Activate Zuran Orb by sacrificing Mystic Sanctuary, causing you to gain 2 life.
Repeat.

Infinite lifegain triggers

Infinite lifegain

Infinite blue mana

Infinite +1/+1 counters on creatures you control

Enter the Unknown

Bolas's Citadel

Zuran Orb

Cast Enter the Unknown either from your hand by paying {G} or from the top of your library by paying 1 life, causing a creature you control to explore and allowing you to play an additional land this turn.
Play Mystic Sanctuary either from your hand or graveyard.
When Mystic Sanctuary enters the battlefield untapped, it triggers twice, putting Enter the Unknown from your graveyard onto the top of your library.
Activate Mystic Sanctuary by tapping it, adding {U}.
Activate Overgrown Estate by sacrificing Mystic Sanctuary, causing you to gain 3 life.
Repeat.

Search Results