dropping me from the air

Pull out a raygun and shoot me.

hit me relentlessly with that fan(?)

Dat big shuriken ._.

It's a psaltery, not a fan.

Open the other eye and paralyze me with their gaze, then tip me off a cliff.

Attacking me with killer butterflies

That's actually highly plausible.

Behead me by means of a metal string.

Using a song

Stabbing me several times in the heart with bladed gloves the srangling every last breathe out of me with her tail

Using his wings to carry me high up into the air and then dropping me into a tree.

Either a poisonous dagger or I am gonna be mauled by some large animal.

tells me a old wise wizards tale

Using some form of deadly martial arts top damage all my major eternal bleeding and slow painful death..

Secret ninja knight skills? o3o

Well, Considering your avatar is headless and almost seems spirtual like.. I would say you would posses me and slaughter tons of trisphites, then after your blood thirst was filled you would turn yourself in as me and let me hang...

Assassin creed style.
Death by hidden blade!