Agatha's Soul Cauldron + Myojin of Towering Might + Tekuthal, Inquiry Dominus + Workhorse

Prerequisites

• Tekuthal has at least one indestructible counter on it, and at least one +1/+1 counter on it.

Steps

1. 1Activate Tekuthal using Myojin of Towering Might's ability by removing an indestructible counter from it, putting six +1/+1 counters on Workhorse, and two +1/+1 counters on any creature you control.
2. 2Activate Workhorse three times by removing three +1/+1 counters from it, adding .
3. 3Activate Tekuthal by paying and removing three +1/+1 counters from Workhorse, putting an indestructible counter on it.
4. 4Repeat.

Effects

• Infinite +1/+1 counters on creatures you control
• Infinite colored mana
• Infinite colored mana that can only be spent to activate abilities of creatures
• Infinite colorless mana