Sméagol, Helpful Guide + Dúnedain Rangers + Bloodghast + Carrion Feeder

Sméagol, Helpful Guide

Dúnedain Rangers

Bloodghast

Carrion Feeder

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 Carrion Feeder by sacrificing Bloodghast, putting a +1/+1 counter on Carrion Feeder.
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 elegant loop starts by dropping a land to trigger Dúnedain Rangers and Bloodghast simultaneously, pulling Bloodghast right out of your graveyard and letting the Rangers tempt you to appoint it as your Ring-bearer. With that setup in place, Sméagol, Helpful Guide watches a creature die and triggers, prompting you to sacrifice Bloodghast to Carrion Feeder in response; this feeds Carrion Feeder a +1/+1 counter while ensuring a death has occurred for Sméagol. As Sméagol's temptation effect resolves, it digs through an opponent's library for a land to drop onto your battlefield, which immediately loops back into new landfall triggers for Dúnedain Rangers and Bloodghast to do it all over again.