Strength of Will + Conclave Mentor + Deathbringer Thoctar

Strength of Will

Conclave Mentor

Deathbringer Thoctar

How it works

1. Cast Strength of Will by paying 1, targeting Deathbringer Thoctar.
2. Activate Deathbringer Thoctar by removing a +1/+1 counter from it, dealing 1 damage to it.
3. Deathbringer Thoctar triggers, putting two +1/+1 counters on it due to Conclave Mentor.
4. Activate Deathbringer Thoctar by removing a +1/+1 counter from it, dealing 1 damage to any target.
5. Repeat from step 2.

This vicious loop turns Deathbringer Thoctar into a self-sustaining artillery piece by capitalizing on a brilliant math multiplier. When you target Deathbringer Thoctar with Strength of Will, it gains indestructible and converts any damage dealt to it directly into +1/+1 counters. Meanwhile, Conclave Mentor acts as the crucial amplifier, ensuring that every time a counter is placed on Deathbringer Thoctar, you actually get an extra one for free. This leaves you with a net gain of counters every time Deathbringer Thoctar pings itself, generating infinite +1/+1 counters and infinite damage to close out the game.