I then rushed towards the dwarf and and used FIRE SLASH of my ax and combined it ith my newly found element DARK.

GREAT SAGE [Combination method

Can combine magic,tool or weapon to eachother, there is no limit for the combination.]

My axe flame started to turn into black flames,

Which was looking cool.

GREAT SAGE [due to the combination of dark and fire element you have acquired new element : BLACK FLAME.]

I cutted dwarf arm like it was butter and the dwarf suffered a lot of damage and jumped back, he couldn't endure the black flame since it was hurting him continuously and was not extinguishing, it was mystery to me as well.

GREAT SAGE [the black flame is fire which is more fatal with unextinguishing effect, it can only be removed by the user or someone who is stronger then the user.]

The dwarf was crying in pain, suddenly he roared.

And rumbling started.....