Rune Avenge 3 Thranduil's Sword
Rank: ✮✮✮ Type: Runestone
This scorching runestone is like a heart wrapped in flame, regularly beating in its own pace. Every time it beats, it will emit powerful energy, providing excellent support to the airship's power furnace.

Main cannon power +40%
(Can choose to activate this Runestone before Revenge battle starts)

Source(s): Sky Exploration Events :
  • Elf's Tree House
  • Hero's Heart / Champion's Heart
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