Kalamax, the Stormsire + Expansion // Explosion

Prerequisites

• You have an additional castable instant.

Steps

1. 1Cast any instant by paying its mana cost.
2. 2Holding priority, cast Expansion by paying its mana cost.
3. 3Kalamax's first and second abilities trigger.
4. 4Resolve the first ability, creating a copy of Expansion and choosing to copy the original Expansion.
5. 5Resolve the second ability, putting a +1/+1 counter on Kalamax.
6. 6Resolve the Expansion copy, creating a copy of Expansion.
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