Clock of Omens + Staff of Domination + Grim Monolith + Everflowing Chalice

Clock of Omens

Staff of Domination

Grim Monolith

Everflowing Chalice

How it works

1. Activate Everflowing Chalice by tapping it, adding at least six C.
2. Activate Clock of Omens by tapping Staff of Domination and Grim Monolith, untapping Everflowing Chalice.
3. Activate Grim Monolith's second ability by paying 4, untapping it.
4. Activate Staff of Domination's first ability by paying 1, untapping it.
5. Repeat.
6. Once you have infinite mana, you may use it to activate Staff of Domination's other abilities and/or untap any artifact(s) you control.

This clever loop uses Everflowing Chalice as our powerhouse mana source, tapping it for at least six mana thanks to a heavy investment of charge counters. To feed Clock of Omens, we tap both Staff of Domination and Grim Monolith as the cost to untap Everflowing Chalice, getting our artifacts ready to cycle again. We then spend a portion of our generated mana to activate Grim Monolith's untap ability and Staff of Domination's self-untap ability, resetting the enablers. Once this loop generates infinite colorless mana, that same Staff of Domination can be tapped and untrapped indefinitely to draw your entire deck, gain infinite life, and untap any creature or artifact you desire.