Does spell power affect max-health-percent based damage?

Some abilities, such as Malthael's Reaper's Mark, deal damage based on the maximum health of their target. Is this damage ability or "spell" damage, and if so, is it affected by spell power modifying abilities?

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Does spell power affect healing hots?

Spell Power does not affect healing dealt by Lifesteal effects, though it can alter the Spell Damage lifesteal amount based on spell damage by altering this damage.

What items increase magic damage in Dota 2?

Item SourcesItemValueCost/Value PointEthereal Blade12387.5Fairy's Trinket5N/AKaya8256.25Kaya and Sange16256.255 more rows

What is spell damage?

Spell Damage is an ability which boosts the overall damage of spells by the listed amount. Spell Damage does not increase healing done by spells, and does not increase damage dealt from non-spell sources such as Hero Powers, Deathrattles or Battlecries.

Wait, 2 percent Healing Done is equal to HOW MUCH Spell Damage?

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