NERF IGNITE FOR THE LOVE OF GOD.
There are so many ways to do it.
You could nerf the damage from 80-505 to something lower.
You could increase the cooldown from 210 seconds to something higher (along the lines of heal or flash).
You could have it not apply grievous wounds, a which essentially gives the spell even less counterplay.
You could have it not grant sight of the target for the full 5 seconds. That's unneeded.
You could lower the range of it from 600 to something more like 550, so it would require champs to take more of a risk in using it.
Point is this spell has no reason to be in this state in this season.
Well, you get the picture.