Patron of the Moon + Tiller Engine + Rakdos Carnarium

Patron of the Moon

Tiller Engine

Rakdos Carnarium

How it works

1. Pay 1 to activate Patron of the Moon, putting Rakdos Carnarium from your hand onto the battlefield.
2. When Rakdos Carnarium enters, it and Tiller Engine each trigger.
3. Resolve Tiller Engine's ability, untapping Rakdos Carnarium.
4. Activate Rakdos Carnarium by tapping it, adding two mana.
5. Resolve Rakdos Carnarium's triggered ability, returning it from the battlefield to your hand.
6. Repeat.

This loop transforms a modest bounce-land into a roaring engine of endless resources. By using Patron of the Moon's active ability to drop Rakdos Carnarium directly into play, you trigger Tiller Engine to instantly untap the newly arrived land. That untap allows you to tap Rakdos Carnarium for black and red mana before its own enters-the-battlefield trigger forces you to return it safely back to your hand, ready to be deployed all over again.