Sidisi, Regent of the Mire + Karmic Guide + Thornbite Staff + Phantom Train

Sidisi, Regent of the Mire

Karmic Guide

Thornbite Staff

Phantom Train

How it works

1. Activate Sidisi by tapping it and sacrificing the creature with mana value 4.
2. When the creature dies, Sidisi triggers, untapping Sidisi.
3. Resolve the Sidisi ability, returning Karmic Guide from your graveyard to the battlefield.
4. When Karmic Guide enters the battlefield, it triggers, returning the creature with mana value 4 from your graveyard to the battlefield.
5. Activate Phantom Train by sacrificing Karmic Guide.
6. When Karmic Guide dies, Sidisi triggers, untapping Sidisi.
7. Resolve the Phantom Train ability.
8. Repeat.

This elegant loop is orchestrated by Sidisi, Regent of the Mire, whose tap ability trades a creature to pull a slightly larger threat from your graveyard—in this case, Karmic Guide. When Karmic Guide enters the battlefield, its own trigger pulls that sacrificed creature right back, setting up a closed economic loop of resurrection. To make the cycle self-sustaining, Thornbite Staff is equipped to Sidisi, granting it a fresh untap trigger every single time a creature dies. Finally, Phantom Train provides the necessary outlet by letting you sacrifice Karmic Guide to fuel its transformation, sending the Guide back to the graveyard to be continuously reborn while generating infinite death triggers, enter-the-battlefield effects, and growing the Train with endless +1/+1 counters.