Activate Skirge Familiar by discarding Cleaving Reaper, adding {B}.
Faith of the Devoted and Feast of Sanity trigger.
Resolve the Feast of Sanity trigger, dealing 1 damage to any target and causing you to gain 1 life.
Resolve the Faith of the Devoted trigger, causing you to pay {1} to cause each opponent to lose 2 life and you to gain 2 life.
Activate Cleaving Reaper by paying 3 life, returning it to your hand from your graveyard.
Repeat.

Infinite lifegain triggers

Infinite lifeloss

Infinite self-discard triggers

Cleaving Reaper

Feast of Sanity

Faith of the Devoted

Skirge Familiar

Activate Prize Pig by tapping it, adding {W}.
Activate Peace of Mind by paying {W} and discarding Cleaving Reaper, causing you to gain three life.
Prize Pig triggers, putting three ribbon counters on it, then removing all ribbon counters on it and untapping it.
Activate Cleaving Reaper by paying three life, returning it from your graveyard to your hand.
Repeat.

Prize Pig

Peace of Mind

Pay 3 life to return Cleaving Reaper from your graveyard to your hand.
Tormod triggers, creating a 1/1 Bat token.
Sacrifice the Bat token to Phyrexian Altar for {W}.
Pay {W} and discard Cleaving Reaper to gain 3 life.
Repeat.

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Desecrated Tomb

Phyrexian Altar

Pay 3 life to return Cleaving Reaper from your graveyard to your hand.
Tormod triggers, creating a tapped 2/2 Zombie token.
Sacrifice the Zombie token to Phyrexian Altar for {W}.
Pay {W} and discard Cleaving Reaper to gain 3 life.
Repeat.

Tormod, the Desecrator

Activate a mana-producing permanent by tapping it, adding at least {1}.
Activate Mind over Matter by discarding Cleaving Reaper, targeting the mana-producing permanent.
Faith of the Devoted and Feast of Sanity trigger.
Resolve the Feast of Sanity trigger, dealing 1 damage to any target and causing you to gain 1 life.
Resolve the Faith of the Devoted trigger, causing you to pay {1} to cause each opponent to lose 2 life and you to gain 2 life.
Resolve the Mind over Matter ability, untapping the mana-producing permanent.
Activate Cleaving Reaper by paying 3 life, returning it to your hand from your graveyard.
Repeat.

Combos with "Cleaving Reaper"