Ratadrabik of Urborg + Leyline of Singularity + Catalyst Elemental

Ratadrabik of Urborg

Leyline of Singularity

Catalyst Elemental

How it works

1. Activate Catalyst Elemental by sacrificing it.
2. When Catalyst Elemental dies, Ratadrabik triggers, creating a token copy of Catalyst Elemental that is a 2/2 legendary Zombie in addition to its other types.
3. Repeat using the Catalyst Elemental token

This clever engine transforms Catalyst Elemental into an infinite mana-generating machine by turning the battlefield into a legendary-stamped playground with Leyline of Singularity. Because Leyline makes all nonland permanents legendary, the elemental's sacrifice naturally triggers Ratadrabik of Urborg's ability whenever it hits the graveyard. Ratadrabik responds by conjuring a fresh, non-legendary copy that retains all of the original's explosive potential. You can then endlessly repeat this fiery cycle, using the newly manifested Catalyst Elemental token to continuously feed your mana pool for any game-winning sequence.