Two flare charms at their highest level unite at the next chest into a union. Here is every union and its recipe.
- Frostfire: Frozen bugs burn twice as hard, and burst into embers when they thaw.
- Fireflowers: Your flowers spit embers at the nearest bug.
- Harvest Moon: Your flowers gather nearby motes, and each one they pick heals you a little.
- Forge: Motes a flare vacuums fire sparks. Spark kills are loop kills if the loop caught a bug.
- Frostbloom: A bug that touches one of your flowers freezes in place.
- Cold Storage: Hitting frozen bugs shakes loose a mote every few hits.