Kalamax, the Stormsire + Reverberate

Prerequisites

• You have an additional castable instant.

Steps

1. 1Cast any instant by paying its mana cost.
2. 2Holding priority, cast Reverberate by paying its mana cost.
3. 3Kalamax's first and second abilities trigger.
4. 4Resolve the first ability, creating a copy of Reverberate and choosing to copy the original Reverberate.
5. 5Resolve the second ability, putting a +1/+1 counter on Kalamax.
6. 6Resolve the Reverberate copy, creating a copy of Reverberate.
7. 7Kalamax's second ability triggers, putting a +1/+1 counter on itself.
8. 8Repeat from step 6 any number of times.

Effects

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