Sefris of the Hidden Ways + Radiant Solar + Mirror Image + Sakashima of a Thousand Faces

Sefris of the Hidden Ways

Radiant Solar

Mirror Image

Sakashima of a Thousand Faces

How it works

1. Put any nontoken creature onto the battlefield.
2. When the creature enters, Radiant Solar, Mirror Image and Sakashima of a Thousand Faces each trigger.
3. Resolve the Radiant Solar trigger, causing you to venture into Tomb of Annihilation and into the Trapped Entry room, causing each player to lose 1 life.
4. Resolve the Mirror Image trigger, venturing into the Oubliette room, causing you to discard a card and then sacrifice Radiant Solar.
5. Resolve the Sakashima of a Thousand Faces trigger, venturing into the Cradle of the Death God room, creating a 4/4 legendary The Atropal creature token and completing Tomb of Annihilation.
6. If you control two or more The Atropal tokens, put all but one into your graveyard due to the legend rule.
7. Sefris' second ability triggers, returning Radiant Solar from your graveyard to the battlefield.
8. Repeat from step 2.

This ingenious loop relies on a critical piece: Sakashima of a Thousand Faces bypasses the legend rule entirely, allowing multiple copies of unique threats to peacefully coexist while also letting you clone your board. When you introduce a nontoken creature, it triggers Radiant Solar, Mirror Image, and Sakashima of a Thousand Faces all at once, chaining ventures through the Tomb of Annihilation to drain your opponents and naturally sacrifice your own pieces. As those pieces hit the graveyard, Sefris of the Hidden Ways awakens with its Create Undead ability to immediately pull Radiant Solar right back to the battlefield and restart the chain.