Other known variants
x2
-30Buffer
If Jumpluff would be Knocked Out by an opponent's attack, flip a coin. If heads, Jumpluff is not Knocked Out and its remaining HP becomes 10 instead.
Energy CrushDoes 10 damage plus 10 more damage for each Energy attached to all of your opponent's Pokémon.
The Poké-BODY "Buffer" found on Hoppip, Skiploom, and Jumpluff should read, "If Hoppip/Skiploom/Jumpluff would be Knocked Out by damage from an opponent's attack, flip a coin...". So only attacks that do damage (not "place counters") would cause Buffer to be invoked.