Idea for a Nasus rework

So I was thinking about a more dynamic play style for Nausus. Because to me, his current one just feels, either hit or miss. While it doesn't really feel like you're doing much, other than the brutal survival of the laning phase. In this rework, I wanna give him a better chance in lane, while having his scaling be more based around stacks.

Nasus:

New passive: Life force tap: Upon attacking an enemy with either a ability, or basic attack. Nasus gains health for each enemy affected, equal to, 25% of stacks+ .4% of max health(+.2% per level) This is 1/3 effective on any area of effect attacks, and does not proc on timat.

Q: Siphoning blow: Nasus raises his cane, and after a short delay, he smashes it down, damaging enemies in a cone in-front of him. Upon killing a minion, it gains +3 permanent damage, and upon killing a champion, +6 permanent damage. Deals, 40/40/40/40 damage+100% ad, on a 8/7/6/5 second cool down. Nasus can also move during the short cast time.

W: Shifting sands: Nasus launches a dash, upon reaching the target area, he erupts a small area of effect slow around him. Slowing nearby enemies for 20/30/40/50% for 3 seconds. Cooldown is 15/13/11/9 seconds.

E: Curse of fatigue: Nasus summons a cursed circle infront of him, enemies caught in it, deal consistently less damage, and take more damage the longer they stay in it. They take 5-20/10-25/15-30/20-35 bonus physical damage, +10-40% of Nasus's stacks. And deal 5-20%/5-25%/5-30%/5-35% less damage. Cooldown is 20/18/16/14 seconds, and both effects last 2 seconds after leaving the circle. And the damage can proc once per second

R: Unchanged. think it's a pretty good ult already.