So I'm trying to understand what's going on here with my shouts. I got all three words of power for Drain Vitality with a new character. And all was well. Then I got the first word of power for Marked for Death. At that point, I then had a second Drain Vitality in my list of shouts except the words of power were the same as Marked for Death. So now I have 2 Drain Vitalities and one Marked for Death. The second drain vitality doesn't have the same phrase as the original, but instead it says "Drains 1 point of stamina, magicka, and health per second." When I got the third word of power for my Marked for Death shout, I then got a THIRD Drain Vitality shout in my list. Only this one again had the words of power for Marked for Death and it says "Drains 2 points of stamina, magicka, and health per second" and the cooldown is only 12 seconds.

So my question is: wtf?

Is this supposed to happen? Or is it a glitch?

Wrong forum, it's a well documented glitch. Use the search feature of this forum.

I sent a PM to the OP with a possible fix. Hope it helps.