Cast Songs of the Damned by paying {B}.
Pinnacle Monk's prowess ability triggers, giving it +1/+1 until end of turn.
Resolve Songs of the Damned, adding {B} for each creature card in your graveyard.
Cast Chthonian Nightmare by paying {1}{B}.
Pinnacle Monk's prowess ability triggers, giving it +1/+1 until end of turn.
Chthonian Nightmare enters, triggering itself, causing you to get {E}{E}{E}.
Activate Chthonian Nightmare by paying {E}, sacrificing Pinnacle Monk // Mystic Peak, and returning Chthonian Nightmare from the battlefield to your hand, returning a creature card from your graveyard to the battlefield.
Cast Chthonian Nightmare by paying {1}{B}.
When Chthonian Nightmare enters the battlefield, it triggers, causing you to get {E}{E}{E}.
Activate Chthonian Nightmare by paying an amount of {E} equal to Pinnacle Monk // Mystic Peak's mana value, sacrificing the creature you returned in step 4, and returning Chthonian Nightmare from the battlefield to your hand, returning Pinnacle Monk // Mystic Peak from your graveyard to the battlefield.
When Pinnacle Monk // Mystic Peak enters the battlefield, it triggers, returning Songs of the Damned from your graveyard to your hand.
Repeat.

Infinite energy counters

Infinite creature LTB

Infinite creature ETB

Infinite creature sacrifice triggers

Infinite death triggers

Infinite storm count

Infinite magecraft triggers

Infinite black mana

Songs of the Damned

Chthonian Nightmare

Pinnacle Monk // Mystic Peak

Spend {2} and tap to activate Isochron Scepter, casting Songs of the Damned and triggering Onyx Talisman.
Pay {3} for the Onyx Talisman trigger, untapping Isochron Scepter.
Allow Songs of the Damned to resolve, adding at least 6 {B}.
Repeat for infinite {B}.

Isochron Scepter

Onyx Talisman

Activate Elite Arcanist's ability by paying {1} and tapping it, casting a copy of Songs of the Damned without paying its mana cost.
Resolve Songs of the Damned, adding at least {2}.
Activate Pemmin's Aura's first ability by paying {1}, untapping Elite Arcanist.
Repeat.
If you have three or more creature cards in your graveyard, this combo nets infinite mana.

Infinite colored mana

Elite Arcanist

Mycosynth Lattice

Pemmin's Aura

Activate Elite Arcanist's ability by paying {1} and tapping it, casting a copy of Songs of the Damned without paying its mana cost.
Resolve Songs of the Damned, adding at least {2}.
Activate Freed from the Real's second ability by paying {1}, untapping Elite Arcanist.
Repeat.
If you have three or more creature cards in your graveyard, this combo nets infinite mana.

Freed from the Real

Infinite card draw

Infinite colorless mana

Infinite draw triggers

Chromatic Orrery

Cast Songs of the Damned by paying {B}.
Holding priority, activate Emiel by paying {3}, blinking Naru Meha.
When Naru Meha enters the battlefield, it triggers, copying Songs of the Damned.
Resolve the copy of Songs of the Damned, adding at least {B}{B}{B}.
Repeat from step 2.
If there are at least four creature cards in your graveyard, this combo nets infintie black mana.

Infinite blinking

Naru Meha, Master Wizard

Emiel the Blessed

Cast Songs of the Damned by paying {B}.
Holding priority, activate Emiel by paying {3}, blinking Dualcaster Mage.
When Dualcaster Mage enters the battlefield, it triggers, copying Songs of the Damned.
Resolve the copy of Songs of the Damned, adding at least {B}{B}{B}.
Repeat from step 2.
If there are at least four creature cards in your graveyard, this combo nets infintie black mana.

Dualcaster Mage

Combos with "Songs of the Damned"