Deal combat damage to an opponent using Unstoppable Slasher
Unstoppable Slasher triggers, causing the defending opponent to lose their entire life total due to Bloodletter of Aclazotz.
The opponent dealt combat damage loses the game due to having 0 or less life.

Target opponent loses the game

Infinite lifeloss for target opponent

Unstoppable Slasher

Bloodletter of Aclazotz

Activate Ashnod's Altar by sacrificing Unstoppable Slasher, adding {C}{C}.
When Unstoppable Slasher dies, its second ability triggers, returning it from your graveyard to the battlefield with zero stun counters due to Solemnity.
Repeat.

Infinite LTB

Infinite ETB

Infinite sacrifice triggers

Infinite death triggers

Infinite colorless mana

Solemnity

Ashnod's Altar

Activate Ashnod's Altar by sacrificing Unstoppable Slasher, adding {C}{C}.
When Unstoppable Slasher dies, its second ability and Vein Ripper trigger.
Resolve the Unstoppable Slasher trigger, returning itself from your graveyard to the battlefield with two stun counters on it.
Resolve the Vein Ripper trigger, causing you to gain 2 life and an opponent to lose 2 life.
Activate Hex Parasite by paying {2} and 2 life, removing both stun counters from Unstoppable Slasher and giving Hex Parasite +2/+0 until end of turn.
Repeat.

Infinite lifegain triggers

Infinite lifeloss

Infinitely powerful Hex Parasite until end of turn

Hex Parasite

Vein Ripper

Activate The Mycosynth Gardens' third ability by paying {1} and tapping it, causing it to become a copy of Amulet of Vigor.
Activate Woe Strider by sacrificing Unstoppable Slasher.
When Unstoppable Slasher dies, its second ability triggers, returning it from your graveyard to the battlefield with two stun counters on it.
When Unstoppable Slasher enters, Amulet of Vigor and The Mycosynth Gardens trigger, untapping Unstoppable Slasher twice, which will instead remove both stun counters from Unstoppable Slasher.
Resolve the Woe Strider ability.
Repeat from step 2.

Infinite scry 1

The Mycosynth Gardens

Amulet of Vigor

Woe Strider

Activate Ashnod's Altar by sacrificing Unstoppable Slasher, adding {C}{C}.
When Unstoppable Slasher dies, its second ability triggers, returning itself from your graveyard to the battlefield with two stun counters on it.
When Unstoppable Slasher enters the battlefield, Healer of the Pride triggers, causing you to gain 2 life.
Activate Hex Parasite by paying {2} and 2 life, removing both stun counters from Unstoppable Slasher and giving Hex Parasite +2/+0 until end of turn.
Repeat.

Healer of the Pride

Combos with "Unstoppable Slasher"