Breach the Multiverse + Goblin Bombardment + Dualcaster Mage
Breach the Multiverse
Goblin Bombardment
Dualcaster Mage
Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite millInfinite self-millInfinite damagePut all creature cards from your library onto the battlefieldInfinite magecraft triggersInfinite recursion of creature cards in your graveyardPut all creature cards from each opponent's library onto the battlefield under your control
How it works
Cast Breach the Multiverse 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 Breach the Multiverse.
Holding priority, activate Goblin Bombardment by sacrificing Dualcaster Mage.
Resolve the Dualcaster Mage trigger, copying Breach the Multiverse, with the copy targeting Dualcaster Mage
Resolve the Breach the Multiverse copy, returning Dualcaster Mage from your graveyard to the battlefield.
Repeat from step 3.
This ingenious loop hinges on Breach the Multiverse as the engine that both dredges through libraries and constantly recycles your resources, while Dualcaster Mage steps in as the catalyst that keeps copying the spell to sustain the chain. Because Dualcaster Mage can target the very sorcery that brings it back from the graveyard, you get a self-sustaining loop that mills everyone completely dry. Goblin Bombardment plays a crucial role not just as the sacrifice outlet to clear the Dualcaster Mage out of the way before its copy resolves, but also as the weapon that turns those endless cycles into infinite damage to close out the game.