Will O' Wisp / Willow Wisp

WILL O' WISP (Will O' The Wisp) A spirit that takes the form of a small light blue ball of flame. They are often found dwelling in swamps and occasionally forests. Under NO circumstances should one use fire magic against them, as they simply absorb it and use the energy to become stronger. They are immune to all mundane weaponry, but harmed by silver.
WILLOW WISPS A spirit that takes the form of a small light blue flickering orb. They are often found dwelling in forests and occasionally swamps. Under NO circumstances should one use physical weaponry against them, as they can enchant anything they touch (usually in ways harmful to you). They are weak to fire magic.
Some of both of these creatures have shown an amount of helpfulness in leading people along their fated paths

Origin/Ancestry

The Ancient Dragons‌ destructive magics turned many mundane creatures into monsters.