Urza, Prince of Kroog + Grim Monolith + Mondrak, Glory Dominus + Thousand-Year Elixir

Urza, Prince of Kroog

Grim Monolith

Mondrak, Glory Dominus

Thousand-Year Elixir

How it works

1. Activate Grim Monolith's first ability by tapping it, adding CCC.
2. Activate Urza by paying 6, creating two token copies of Grim Monolith that are 1/1 Soldiers in addition to their other types.
3. Activate both Grim Monolith tokens' first abilities by tapping them, adding six C.
4. Repeat from step 2.

This loop transforms the mana-generating engine of Grim Monolith into an exponential token factory by leveraging Urza, Prince of Kroog's ability to copy artifacts into creature tokens. Because Mondrak, Glory Dominus doubles every token creation event, a single activation of Urza's six-mana ability yields two Monolith copies instead of one, instantly generating a positive mana return that easily sustains the loop. Meanwhile, Thousand-Year Elixir sits on the board ready to assist, though the true heavy lifting of the combo comes from the synergy between Urza's artifact-duplication, Mondrak's token multiplication, and the explosive mana acceleration of the Monoliths.