Happy Plume is a Battle Item in Riviera: The Promised Land. It is received from an injured harpy in Nelde Ruins if Ein decides to spare it. Ein's skill with this item is unique compared to the others, though it should be noted that Summon Happy does not work on boss enemies.
|Target||Enemy with highest HP|
|Effects||Unavoidable+Unblockable, halves target's HP|
The use of Tickle is inadvisable.