Karthus: Requiem
Heyo everyone,
To me, it seems Karthus' ult is in a pretty underpowered spot, considering it is one of the (I believe, anyways) defining part of his kit.
With a base damage of 250/400/550, and a scaling value of 60% of AP, it isn't very devastating early levels due to the base 23% magic reduction all champions have. It isn' very devastating late-game, as it has a 200/180/160 that comes with it (which is only a **94.75 second **cooldown at lvl 18 with 45% CDR, which isn't very good versus just about every other ult late-game because of this cooldown.)
It is also worth mentioning that if the spell is interrupted in any way, it is reset to its full cooldown, which is pretty devastating not to the enemy, but to the Karthus player and his team. (I've had plenty of incidents where I press R and someone pops in and displaces me or kills me, putting my ult on a 152 second cooldown, its pretty frustrating, with him being a Death Herald and such letting death stop him, hah.)
A few solutions I could see to this problem would be some of the following, or different combos:
1.) Lowering his cooldown. I find it extremely stressful finding the right moment to use a cool spell when I have to wait a full 3 minutes to use it again. I would suggest a 20-40 second cooldown buff to his ult, at least.
2.) Giving a slight buff to his damage. As it stands, his damage output is fairly weak considering he has to get up and personal with his opponents for his Defile, and his Lay Waste is extremely hard to hit on any decent person. it doesn't have to be a big buff, could be only +25 damage on his ult flat, and/or a 5% scaling buff.
3.) Not allowing Death to stop him. It is extremely silly to allow a Herald of Death to be stopped by something silly such as death. I would propose not letting death cancel his Requiem.
4.) Reducing the cooldown of his ult when he is CC'd same thing as not allowing death to stop him. its very frustrating and I believe he should get a reduced cooldown on his ult if he gets it cancelled.
Anyways, I don't think these would all be in at once, but I hope at least one of them gets through. good luck on the rift everyone!
or 
) that would negate a nice amount of damage, not to mention that ADC's can just lifesteal it all back, and most people have shields and heals to expend.
, it is extremely hard to get a good ult off. And if we also take into account the Recall, it takes about 20 second out of your lane unless you happen to be at the platform or were low already and happen to want to go back.