Sméagol, Helpful Guide + Dúnedain Rangers + Bloodghast + Viscera Seer

Sméagol, Helpful Guide

Dúnedain Rangers

Bloodghast

Viscera Seer

How it works

1. Play a land card, triggering Dúnedain Rangers and Bloodghast.
2. Resolve the Bloodghast trigger, returning it from your graveyard to the battlefield.
3. Resolve the Dúnedain Rangers trigger, causing the Ring to tempt you, and causing Bloodghast to become your Ring-bearer.
4. Sméagol triggers.
5. Holding priority, activate Viscera Seer by sacrificing Bloodghast, causing you to scry 1.
6. Resolve the Sméagol trigger, causing an opponent to reveal cards from the top of their library until they reveal a land card, then causing you to put the land onto the battlefield tapped under your control, and your opponent to put all other revealed cards into their graveyard.
7. When the land enters the battlefield, Dúnedain Rangers and Bloodghast trigger.
8. Repeat from step 2.
9. NOTE: This combo can be stopped if an opponent runs out of lands in their library, so it is recommended to alternate opponents in between cycles to maximize the amount of iterations.

This clever engine puts your opponents' libraries onto your own battlefield by weaponizing the Ring-tempting mechanic into a perpetual motion machine. Every time you play a land, Dúnedain Rangers and Bloodghast trigger together; you return Bloodghast from the graveyard to the battlefield, and the Rangers make it your Ring-bearer to trigger Sméagol, Helpful Guide. Before Sméagol's delayed end-step trigger can resolve, you use Viscera Seer to sacrifice Bloodghast, satisfying Sméagol's prerequisite that a creature died under your control this turn. As Sméagol forces your opponent to dig for a land, that new land enters your battlefield, triggering Dúnedain Rangers and Bloodghast all over again to restart the loop.