Gravitic Punch + Kalamax, the Stormsire + Increasing Vengeance

Prerequisites

• You have not cast an instant spell this turn.

Steps

1. 1Cast Gravitic Punch by paying its mana cost, targeting Kalamax.
2. 2Holding priority, cast Increasing Vengeance by paying its mana cost or its flashback cost, targeting Gravitic Punch.
3. 3Kalamax's first and second abilities trigger.
4. 4Resolve the first ability, creating a copy of Increasing Vengeance targeting the original Increasing Vengeance.
5. 5Resolve the second ability, putting a +1/+1 counter on Kalamax.
6. 6Resolve the Increasing Vengeance copy, creating a copy of Increasing Vengeance, targeting the original Increasing Vengeance.
7. 7Kalamax's second ability triggers, putting a +1/+1 counter on itself.
8. 8Repeat from step 6 any number of times.
9. 9Once you have an arbitrarily large Kalamax, have the final Increasing Vengeance copy target Gravitic Punch. This'll create two copies of Gravitic Punch in addition to the original Gravitic Punch.
10. 10Resolve all Gravitic Punches, dealing infinite damage to each of up to three opponents.

Effects

• Infinite +1/+1 counters on a creature
• Infinite damage
• Infinite magecraft triggers