Hidetsugu and Kairi + Clone Legion + Vampire Charmseeker

Hidetsugu and Kairi

Clone Legion

Vampire Charmseeker

How it works

1. Cast Clone Legion by paying 7, causing you to create a token copy of Hidetsugu and Kairi and Vampire Charmseeker.
2. Put the token Hidetsugu and Kairi into your graveyard due to the legend rule.
3. The Hidetsugu and Kairi token's first and second abilities trigger, as well as Vampire Charmseeker.
4. Resolve the Vampire Charmseeker trigger, returning Clone Legion from your graveyard to your hand.
5. Resolve the first Hidetsugu and Kairi trigger, causing you to draw three cards and then put Clone Legion and another card on top of your library, ensuring Clone Legion is on top.
6. Resolve the second Hidetsugu and Kairi trigger, exiling Clone Legion from the top of your library, then causing an opponent to lose 9 life and allowing you to cast Clone Legion from exile without paying its mana cost.
7. Resolve Clone Legion, causing you to create a token copy of Hidetsugu and Kairi and Vampire Charmseeker.
8. Repeat from step 2.

This magnificent loop sets off a devastating chain reaction by repeatedly multiplying your board state using Clone Legion. When the original Clone Legion brings forth token copies of both Hidetsugu and Kairi and Vampire Charmseeker, the legend rule instantly consigns the extra Hidetsugu and Kairi to the graveyard, triggering its lethal death ability alongside Vampire Charmseeker's entry trigger. Vampire Charmseeker dutifully fishes Clone Legion back out of your graveyard, while the dying spirit's triggers draw you three fresh cards and stack Clone Legion right back on top of your library. Finally, the death trigger exiles Clone Legion, forces an opponent to lose 9 life, and lets you recast the giant spell for free—restarting the entire cycle anew.