Cast Karn's Touch by paying {U}{U}, causing Aetherflux Reservoir to become an artifact creature until end of turn.
Give Aetherflux Reservoir lifelink.
Activate Aetherflux Reservoir by paying 50 life, dealing 50 damage to any target and causing you to gain 50 life.
Repeat step 3.

Infinite damage

Infinite lifegain triggers

Aetherflux Reservoir

Karn's Touch

Cast Karn's Touch by paying {U}{U}, causing Basalt Monolith to become an artifact creature until end of turn.
Activate Basalt Monolith's first ability by tapping it, adding {C}{C}{C}.
Activate Basalt Monolith's second ability by paying {1}, untapping it.
Repeat.

Infinite colorless mana

Training Grounds

Basalt Monolith

Cast Karn's Touch by paying {U}{U}, targeting Basalt Monolith.
Activate Basalt Monolith's first ability by tapping it, adding {C}{C}{C}.
Activate Basalt's Monolith's last ability by paying {2}, untapping it.
Repeat.

Heartstone

Cast Karn's Touch by paying {U}{U}, targeting Isochron Scepter, causing it to become an artifact creature until end of turn.
Activate creatures you control by tapping those, adding {3}.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Vitalize without paying its mana cost, untapping all creatures.
Repeat from step 2.


Infinite mana creatures you control can produce

Infinite storm count

Isochron Scepter

Vitalize

Cast Karn's Touch by paying {U}{U}, targeting Thran Dynamo.
Activate Umbral Mantle's equip ability by paying {0}, attaching it to the Thran Dynamo.
Activate Thran Dynamo by tapping it, adding {C}{C}{C}.
Activate Umbral Mantle by paying {3} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Infinitely large Thran Dynamo until end of turn

Thran Dynamo

Umbral Mantle

Activate Chromatic Orrery's first ability by tapping it, adding {5}.
Cast Karn's Touch by paying {2}, causing Chromatic Orrery to become an artifact creature until end of turn.
Activate Umbral Mantle's equip ability by paying {0}, attaching it to Chromatic Orrery.
Activate Chromatic Orrery by paying {3} and untapping it, giving it +2/+2 until end of turn.
Activate Chromatic Orrery's first ability by tapping it, adding {5}.
Repeat from step 4.
Once you have infinite mana, you may instead use Chromatic Orrery's second ability if you control a colored permanent.

Infinite card draw

Infinite colored mana

Infinite draw triggers

Infinitely large Chromatic Orrery until end of turn

Infinite untap of creatures you control

Infinitely large creature until end of turn

Chromatic Orrery

Cast Karn's Touch by paying {U}{U}, targeting Gilded Lotus.
Activate Umbral Mantle's equip ability by paying {0}, attaching it to the Gilded Lotus.
Activate Gilded Lotus by tapping it, adding three mana of any one color.
Activate Umbral Mantle by paying {3} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Infinitely large Gilded Lotus until end of turn

Gilded Lotus

Cast Karn's Touch by paying {U}{U}, targeting Isochron Scepter, causing it to become an artifact creature until end of turn.
Activate creatures you control by tapping those, adding {3}.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of To Arms! without paying its mana cost, untapping all creatures.
Repeat from step 2.


To Arms!

Cast Karn's Touch by paying {U}{U}, targeting Isochron Scepter, causing it to become an artifact creature until end of turn.
Activate creatures you control by tapping those, adding {3}.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Energy Arc without paying its mana cost, untapping all creatures.
Repeat from step 2.


Energy Arc

Cast Karn's Touch by paying {U}{U}, targeting Isochron Scepter, causing it to become an artifact creature until end of turn.
Activate creatures you control by tapping those, adding {3}.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Rally of Wings without paying its mana cost, untapping all creatures.
Repeat from step 2.


Rally of Wings

Cast Karn's Touch by paying {U}{U}, targeting Isochron Scepter, causing it to become an artifact creature until end of turn.
Activate creatures you control by tapping those, adding {3}.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Roar of the Kha without paying its mana cost, untapping all creatures.
Repeat from step 2.


Roar of the Kha

Cast Karn's Touch by paying {U}{U}, targeting Isochron Scepter, causing it to become an artifact creature until end of turn.
Activate creatures you control by tapping those, adding {3}.
Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Call to Glory without paying its mana cost, untapping all creatures.
Repeat from step 2.


Combos with "Karn's Touch"