Dark Slumber (spell)

[Darkfang]

Based on Sleep: The spell normally sleeps the unit, but when targeted at non-hero enemies with less than X hp adds a dark conversion effect; if the unit isnt awaken in the next 5 seconds it will turn into a dark version of it self (reanimated dead unit) for X duration depending on the level of the Dark Slumber spell. As you see it is for a Dreadlord...