Narset, Enlightened Master + Mirror of Fate + Scrabbling Claws + Alrund's Epiphany

Narset, Enlightened Master

Mirror of Fate

Scrabbling Claws

Alrund's Epiphany

How it works

1. Activate Mirror of Fate by tapping and sacrificing it.
2. Holding priority, activate Scrabbling Claws's first ability by tapping it, exiling Mirror of Fate from your graveyard.
3. Resolve the Mirror of Fate ability, choosing itself, Alrund's Epiphany and three to five other face-up cards you own in exile, then exiling your library and putting the chosen cards on top, ensuring Alrund's Epiphany and Mirror of Fate are the topmost cards.
4. Declare Narset as an attacker.
5. Narset triggers, exiling the top four cards of your library and allowing you to cast them from exile this turn without paying their mana costs.
6. During your postcombat main phase, cast Alrund's Epiphany from exile without paying its mana cost, causing you to create two 1/1 Bird creature tokens, take an extra turn after this one and exile Alrund's Epiphany.
7. Cast Mirror of Fate from exile without paying its mana cost.
8. Repeat each turn.