Thundergod Heart: Energy, Resurrection and Patch History
Thundergod Heart has changed across official balance updates, so read its current energy requirement rather than combining numbers from different
FAQ
What does the rework describe?
Why do other guides quote different costs?
What does the rework describe?
The Good patch describes preventing death by consuming all energy to heal, requiring at least one battery, with each subsequent trigger costing three more batteries. This is the rule published in that patch, not a newly tested guarantee of every later build.

Why do other guides quote different costs?
The Regular Patch separately raises the resurrection energy cost from three to five and changes Power Flow to triple energy gain. Record the date when comparing these descriptions rather than blending them into an invented single formula.
How should you evaluate the Heart?
Consider whether the rest of your equipment can rebuild the required energy before the next dangerous encounter. Inspect the live tooltip and battery state. The official changes establish a resource trade-off, not immunity to all lethal damage indefinitely.
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