Cast Sevinne's Reclamation 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 Sevinne's Reclamation.
Holding priority, activate Goblin Bombardment by sacrificing Dualcaster Mage.
Resolve the Dualcaster Mage trigger, copying Sevinne's Reclamation, with the copy targeting Dualcaster Mage
Resolve the Sevinne's Reclamation copy, returning Dualcaster Mage from your graveyard to the battlefield.
Repeat from step 3.

Infinite damage

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite magecraft triggers

Infinite sacrifice triggers

Goblin Bombardment

Dualcaster Mage

Sevinne's Reclamation

Cast Sevinne's Reclamation by paying {2}{W}, returning Eternal Witness to the battlefield.
Eternal Witness enters the battlefield, returning Sevinne's Reclamation from your graveyard to your hand.
Activate Ashnod's Altar by sacrificing Eternal Witness, adding {C}{C}.
Pitiless Plunderer triggers, creating a Treasure token.
Activate a Treasure token by tapping and sacrificing it, adding {W}.
Repeat.

Infinite storm count

Eternal Witness

Ashnod's Altar

Pitiless Plunderer

Cast Sevinne's Reclamation by paying {2}{W}, returning Eternal Witness to the battlefield.
Eternal Witness enters the battlefield, returning Sevinne's Reclamation from your graveyard to your hand.
Activate Phyrexian Altar by sacrificing Eternal Witness, adding {W}.
Pitiless Plunderer and Pawn of Ulamog triggers.
Resolve the Pitiless Plunderer, creating a Treasure token.
Resolve the Pawn of Ulamog trigger, creating a 0/1 Eldrazi Spawn creature token.
Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
Activate Eldrazi Spawn by sacrificing it, adding {C}.
Pitiless Plunderer triggers, creating a Treasure token.
Repeat any number of times.
Once you have infinite Treasure tokens, you may repeat this loop spending mana from Treasures instead of Eldrazi Spawns in step 8, giving you infinite Eldrazi Spawn tokens.

Infinite colored mana

Infinite colorless mana

Infinite Treasure tokens

Infinite creature tokens with 0 power

Phyrexian Altar

Pawn of Ulamog

Cast Sevinne's Reclamation by paying {2}{W}, returning Eternal Witness to the battlefield.
Eternal Witness enters the battlefield, returning Sevinne's Reclamation from your graveyard to your hand.
Activate Phyrexian Altar by sacrificing Eternal Witness, adding {W}.
Pitiless Plunderer and Sifter of Skulls triggers.
Resolve the Pitiless Plunderer, creating a Treasure token.
Resolve the Sifter of Skulls trigger, creating a 1/1 Eldrazi Scion creature token.
Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
Activate Eldrazi Scion by sacrificing it, adding {C}.
Pitiless Plunderer triggers, creating a Treasure token.
Repeat.

Sifter of Skulls

Cast Sevinne's Reclamation by paying {2}{W}, returning Eternal Witness to the battlefield.
Eternal Witness enters the battlefield, returning Sevinne's Reclamation from your graveyard to your hand.
Activate Phyrexian Altar by sacrificing Eternal Witness, adding {W}.
Pitiless Plunderer and Ogre Slumlord triggers.
Resolve the Pitiless Plunderer, creating a Treasure token.
Resolve the Ogre Slumlord trigger, creating a 1/1 Rat creature token.
Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
Activate Phyrexian Altar by sacrificing a Rat token, adding one mana of any color.
Pitiless Plunderer triggers, creating a Treasure token.
Repeat.

Ogre Slumlord

Combos with "Sevinne's Reclamation"