Heart of Thunder (BTDB2)

Heart of Thunder is the 2nd upgrade of Path 1 for the Druid in Bloons TD Battles 2. It is very similar to its BTD6 counterpart, the most notable difference being its slightly lower price.

It costs $850.

Summary
The lightning from Heart of Thunder provides the Druid with a lot of grouped popping power. Strategies for the BTDB1 Apprentice Lightning Bolt upgrade should be fairly similar, but given the very different spawning algorithm for Druid lightning it will give starkly different results depending on target priority.

Tips

 * TBA