How much is "Extra Holy damage" that Mastema gives?

[kah.hhong]

I want to build Rune > Warlock
When “Rune Of Justice” become Holy
I just want to know that how much damage extra from Mastema? ty guys XD

[Isuke_Shiro]

As for now, it’s x2 the current damage (I test on heal skill from cleric)

[kah.hhong]

thank you so much ^^