Hakbal of the Surging Soul + Agatha's Soul Cauldron + Crystalline Crawler + Hellkite Charger

Prerequisites

• You control at least seven Merfolk.
• You have a nonland card on top of your library.
• An opponent cannot block and kill Hellkite Charger.

Steps

1. 1At the beginning of your combat phase, Hakbal of the Surging Soul's first ability triggers, causing you to reveal the top card of your library, put a +1/+1 counter on each Merfolk you control and putting the card back on top of your library.
2. 2Declare Hellkite Charger as an attacker, triggering its ability.
3. 3Activate seven Merfolk you control using Crystalline Crawler's first ability by removing a +1/+1 counter from each of them, adding .
4. 4Resolve the Hellkite Charger trigger, causing you to pay to untap all attacking creatures you control and to get an additional combat phase after this one.
5. 5Repeat each combat phase.
6. 6If you control eight or more Merfolk, this combo nets infinite colored mana and +1/+1 counters on Merfolk you control.

Effects

• Infinite +1/+1 counters on certain creatures
• Infinite colored mana
• Infinite combat phases