Spell Request - Temptation of Darkness (Want it in JASS/vJass

[lnfernal]

I want to request a spell, thanks.

Spell Name: Temptation of Darkness
Description: The caster channels a power of darkness. Nearby enemies whitin 800 range will be slowly dragged to the position of the caster, taking x damage each second. The closer to the caster the greater damage. Enemies cannot be dragged closer than 200 range from the caster.
Other: I want the spell in Jass or vJass. I would also like the special effect Death Pact to be randomly spawned whitin the 800 AoE about 8 times per second. The caster should also randomly play it's Stand Victory, Attack 2 and Attack Slam every 2 second.

And of course, moving, attacking or any other thing that may interrupt the channel will cancel the spell.