Cast Victimize by paying its mana cost
Holding priority, cast Dualcaster Mage by paying its mana cost.
When Dualcaster Mage enters, it triggers, targeting Victimize.
Holding priority, activate Ashnod's Altar by sacrificing Dualcaster Mage.
Resolve the Dualcaster Mage trigger, copying Victimize
Resolve the Victimize copy, sacrificing a creature and returning Dualcaster Mage and another creature from your graveyard to the battlefield.
Repeat from step 3.

Infinite creature ETB

Infinite creature LTB

Infinite colorless mana

Infinite death triggers

Infinite magecraft triggers

Infinite creature sacrifice triggers

Ashnod's Altar

Dualcaster Mage

Victimize

Cast Burnt Offering by paying {B} and sacrificing Scholar of the Ages, adding {B}{B} and then five mana in any combination of {B} and/or {R}.
Cast Victimize by paying {2}{B}, causing you to sacrifice a creature and return Scholar of the Ages and another creature from your graveyard to the battlefield.
When Scholar of the Ages enters the battlefield, it triggers, returning Burnt Offering and Victimize to your hand from your graveyard.
Repeat.

Infinite black mana

Infinite red mana

Infinite storm count

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

Scholar of the Ages

Burnt Offering

Cast Culling the Weak by paying {B} and sacrificing Scholar of the Ages, adding {B}{B}{B}{B}.
Cast Victimize by paying {2}{B}, causing you to sacrifice a creature and return Scholar of the Ages and another creature from your graveyard to the battlefield.
When Scholar of the Ages enters the battlefield, it triggers, returning Culling the Weak and Victimize to your hand from your graveyard.
Repeat.

Culling the Weak

During your precombat main phase, cast Victimize by paying {2}{B} and sacrificing another creature, returning Xiahou Dun and Abhorrent Overlord from your graveyard to the battlefield.
When Abhorrent Overlord enters, it triggers, creating a number of 1/1 Harpy creature tokens equal to your devotion to black.
Activate Phyrexian Altar three times by sacrificing Abhorrent Overlord and two Harpies. adding {2}{B}.
Activate Xiahou Dun by sacrificing it, returning Victimize from your graveyard to your hand.
Repeat.

Infinite colored mana

Infinite creature tokens

Xiahou Dun, the One-Eyed

Phyrexian Altar

Abhorrent Overlord

Activate Viscera Seer twice by sacrificing Priest of Gix and Eternal Witness.
Cast Victimize by paying {2}{B} and sacrificing another creature, returning Eternal Witness and Priest of Gix from your graveyard to the battlefield.
When Priest of Gix and Eternal Witness enter, they each trigger as well as Insidious Roots.
Resolve the Priest of Gix trigger, adding {B}{B}{B}.
Resolve the Insidious Roots trigger, creating a creature token and putting a +1/+1 counter on each Plant you control
Resolve the Eternal Witness trigger, returning Victimize from your graveyard to your hand.
Repeat.

Infinite scry 1

Infinite +1/+1 counters on certain creatures

Eternal Witness

Priest of Gix

Viscera Seer

Insidious Roots

Cast Victimize by paying {2}{B}, targeting two creature cards in your graveyard.
Holding priority, activate Slick Imitator by paying {1} and sacrificing it.
When Slick Imitator dies, Pitiless Plunderer triggers, creating a Treasure token.
Resolve the Slick Imitator ability, copying Victimize, with the copy targeting Slick Imitator and another creature card in your graveyard.
Resolve the copy of Victimize, causing you to sacrifice a creature and return Slick Imitator and another creature from your graveyard to the battlefield.
When the creature sacrificed in step 5 dies, Pitiless Plunderer triggers, creating a Treasure token.
Activate a Treasure by tapping and sacrificing it, adding {1}.
Repeat from step 2.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite artifact tokens

Infinite Treasure tokens

Slick Imitator

Pitiless Plunderer

Activate Phyrexian Altar by sacrificing another nontoken creature, adding one mana.
Activate Cormela by paying {1} and tapping it, adding {U}{B}{R} that can only be spent to cast instant and/or sorcery spells.
Cast Saw in Half by paying {2}{B}, destroying Cormela and creating two token copies of it with base power equal to half the destroyed creature's power and base toughness equal to half the destroyed creature's toughness, rounding up each time.
Put one of the Cormela tokens into your graveyard due to the legend rule.
The Cormela that died in step 3 and the Cormela that died in step 4 each trigger, returning Victimize and Saw in Half from your graveyard to your hand.
Activate the Cormela token by paying {1} and tapping it, adding {U}{B}{R} that can only be spent to cast instant and/or sorcery spells.
Activate Phyrexian Altar by sacrificing the Cormela token, adding one mana.
When the Cormela token dies, it triggers, returning up to one instant or sorcery from your graveyard to your hand.
Cast Victimize by paying {2}{B}, causing you to sacrifice the Cormela token and return Cormela and another creature from your graveyard to the battlefield tapped.
When the tapped permanents enter, Amulet of Vigor triggers for each one, untapping them.
Put the token Cormela into your graveyard due to the legend rule.
The token Cormela triggers, returning up to one instant or sorcery from your graveyard to your hand.
Repeat.

Cormela, Glamour Thief

Saw in Half

Amulet of Vigor

Combos with "Victimize"