Spell lifesteal

Working
The following abilities can lifesteal with Spell Lifesteal

1 The instantly killing effect of these spells also triggers Spell Lifesteal, healing based on the killed unit's remaining health.

2 Despite these spells using separate units to apply their effects, the damage sources of those are set on the caster, so Spell Lifesteal procs and heals.

3 The rum wear-off health loss does not proc Spell Lifesteal.

4 Only the splash from an Aghanim's Scepter upgraded Empower can proc Spell Lifesteal. The cleave cannot.

5 Does not lifesteal off of the area health cost. Only steals life when targeting an enemy to damage it.

Not working
The following abilities do not lifesteal with Spell Lifesteal

1 The cleave from Empower cannot proc Spell Lifesteal.