Neriv, Heart of the Storm + Boros Reckoner

Neriv, Heart of the Storm

Boros Reckoner

How it works

1. Cast Boros Reckoner by paying its mana cost.
2. Give Boros Reckoner indestructible.
3. Deal damage to Boros Reckoner.
4. Boros Reckoner triggers, dealing double that much damage to itself due to Neriv.
5. Repeat step 4 an arbitrarily large number of times.
6. Resolve the final Boros Reckoner trigger, dealing an arbitrarily large amount of damage to any target.