Ratadrabik of Urborg + Gollum, Patient Plotter + Carrion Feeder

Ratadrabik of Urborg

Gollum, Patient Plotter

Carrion Feeder

How it works

1. Activate Carrion Feeder by sacrificing Gollum.
2. When Gollum dies, it and Ratadrabik trigger.
3. Resolve the Ratadrabik trigger, creating a nonlegendary token copy of Gollum that is a 2/2 Zombie in addition to its other types.
4. Resolve the Gollum trigger from step 2, causing the Ring to tempt you, and for the Gollum token to become your Ring-bearer, thus making it legendary.
5. Resolve the Carrion Feeder ability from step 1, putting a +1/+1 counter on it.
6. Repeat.