Activate a creature you control by tapping it, adding at least {1}.
Activate Elite Arcanist by paying {1} and tapping it, casting a copy of Cerulean Wisps without paying its mana cost, targeting Mirrorwing Dragon.
Mirrorwing Dragon triggers, copying Cerulean Wisps for each creature you control, with each copy targeting a different creature.
Resolve a Cerulean Wisps copy, untapping the creature it is targeting and causing you to draw a card.
Repeat step 4 for each remaining Cerulean Wisps copy.
Repeat from step 1.

Infinite card draw

Infinite draw triggers

Near-infinite magecraft triggers

Elite Arcanist

Cerulean Wisps

Mirrorwing Dragon

Cast Storm Herd by paying {8}{W}{W}, creating a number of 1/1 Pegasus creature tokens equal to your life total.
Cast any instant or sorcery by paying its mana cost, targeting Mirrorwing Dragon.
Mirrorwing Dragon and Venerated Rotpriest trigger.
Resolve the Venerated Rotpriest trigger, causing an opponent to get a poison counter.
Resolve the Mirrorwing Dragon trigger, copying the spell for each other creature you control, with each copy targeting a different creature.
Venerated Rotpriest triggers for each copy made this way.
Resolve the first trigger, causing an opponent to get a poison counter.
If the opponent has ten poison counters, they lose the game.
Repeat from step 7 for each remaining trigger.

Each opponent loses the game

Venerated Rotpriest

Storm Herd

Before damage cast Ephemeral Shields, targeting any creature.
Mirrorwing Dragon's ability triggers, copying Shields to the other creatures and giving each indestructible until the end of turn.
Cast Jeskai Charm, choosing the mode to give your creatures lifelink until the end of turn.
Cast Arcbond, targeting one of the creatures.
Mirrorwing Dragon's ability triggers, copying Arcbond onto the other creatures.
Once a creature takes damage, the ability given by Arcbond triggers, reflecting the damage onto all players and all other creatures.
Because of lifelink, you gain life while all other players lose life.
As the ability deals damage to the other creatures you control, their Arcbond abilities trigger in response, doing the same.

Infinite damage

Jeskai Charm

Ephemeral Shields

Arcbond

Combos with "Mirrorwing Dragon"