Cast Burnt Offering by paying {B} and sacrificing Scholar of the Ages, adding seven {B}.
Cast Persist by paying its mana cost, returning Scholar of the Ages from your graveyard to the battlefield.
When Scholar of the Ages enters, it triggers, returning Burnt Offering and Persist from your graveyard to your hand.
Repeat.

Infinite black mana

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Infinite death triggers

Infinite magecraft triggers

Infinite storm count

Return all instant and sorcery cards from your graveyard to your hand

Scholar of the Ages

Burnt Offering

Persist

Cast Culling the Weak by paying {B} and sacrificing Scholar of the Ages, adding {B}{B}{B}{B}.
Cast Persist by paying its mana cost, returning Scholar of the Ages from your graveyard to the battlefield.
When Scholar of the Ages enters, it triggers, returning Culling the Weak and Persist from your graveyard to your hand.
Repeat.

Culling the Weak

Cast Persist by paying its mana cost, targeting any applicable target.
Holding priority, cast Dualcaster Mage by paying its mana cost.
When Dualcaster Mage enters, it triggers, targeting Persist.
Holding priority, activate Ashnod's Altar by sacrificing Dualcaster Mage.
Resolve the Dualcaster Mage trigger, copying Persist, with the copy targeting Dualcaster Mage
Resolve the Persist copy, returning Dualcaster Mage from your graveyard to the battlefield.
Repeat from step 3.

Infinite colorless mana

Ashnod's Altar

Dualcaster Mage

Cast Burnt Offering by paying {B} and sacrificing Archaeomancer, adding {2}{B}{B}.
Cast Persist by paying {1}{B}, returning Archaeomancer from your graveyard to the battlefield with a -1/-1 counter on it.
Archaeomancer enters the battlefield, triggering itself and Inalla.
Resolve the Archaeomancer trigger, returning Burnt Offering from your graveyard to your hand.
Resolve the Inalla trigger, causing you to pay {1} to create a token copy of Archaeomancer with haste.
The token Archaeomancer enters the battlefield, returning Persist from your graveyard to your hand.
Repeat.
Once you have infinite Archaeomancer tokens, if Inalla is on the battlefield, you may activate Inalla's ability infinite times to cause infinite lifeloss for opponents.

Infinite creature tokens with haste

Infinite lifeloss

Inalla, Archmage Ritualist

Archaeomancer

Cast Culling the Weak by paying {B} and sacrificing Archaeomancer, adding {B}{B}{B}{B}.
Cast Persist by paying {1}{B}, returning Archaeomancer from your graveyard to the battlefield with a -1/-1 counter on it.
Archaeomancer enters the battlefield, triggering itself and Inalla.
Resolve the Archaeomancer trigger, returning Culling the Weak from your graveyard to your hand.
Resolve the Inalla trigger, causing you to pay {1} to create a token copy of Archaeomancer with haste.
The token Archaeomancer enters the battlefield, returning Persist from your graveyard to your hand.
Repeat.
Once you have infinite Archaeomancer tokens, if Inalla is on the battlefield, you may activate Inalla's ability infinite times to cause infinite lifeloss for opponents.

Cast Sacrifice by paying {B} and sacrificing Archaeomancer, adding {B}{B}{B}{B}.
Cast Persist by paying {1}{B}, returning Archaeomancer from your graveyard to the battlefield with a -1/-1 counter on it.
Archaeomancer enters the battlefield, triggering itself and Inalla.
Resolve the Archaeomancer trigger, returning Sacrifice from your graveyard to your hand.
Resolve the Inalla trigger, causing you to pay {1} to create a token copy of Archaeomancer with haste.
The token Archaeomancer enters the battlefield, returning Persist from your graveyard to your hand.
Repeat.
Once you have infinite Archaeomancer tokens, if Inalla is on the battlefield, you may activate Inalla's ability infinite times to cause infinite lifeloss for opponents.

Combos with "Persist"