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Dawnguard Vampirism Buffs

This mod buffs vampirism.

Base vampirism has received several buffs:

Vampire's Servant will work on any enemy
Reanimate works on higher level enemies. (at stage four vampirism you can resurrect anyone)
Drain has been buffed. It now does 25 DPS at stage four. (reduced the cost of drain as well)
This mod now also makes all base vampire powers lesser powers (so they can be cast any time though at a cost)

The Vampire Lord has also received many buffs:

Poison Talons: Damage slightly increased to make it more useful
Vampiric Grip: Reduced cost
Bats: Damage multiplied by four. Bats now do 16 DPS.
Drain Life: Slight damage increase for the higher stages.
Raise Dead: At maximum level, this spell can resurrect anyone for a long time.

This is really just a personal mod for myself so that vampirism can be a bit more viable in game. If you want to use it then go ahead. If you've got any suggestions feel free to post them.

Update:

The vampire calm and invisibility powers can now be used at stage one vampirism.
Buffed lower level vampires a bit.
Three spell tomes can be found in Harkon's room on a table. One is a strong drain spell, one a vampiric dread thrall, and one a buff.