Deathfire Touch idea
https://vignette.wikia.nocookie.net/leagueoflegends/images/7/71/Deathfire_Touch_mastery_2016.png/revision/latest?cb=20151103094525
While Deathfire Touch was loved by many who played Jhin, Karthus and everyone who has DoT abilities in their kit, I was not very fond of this mastery as it was just a way to simply increase your damage while not doing anything special. But after all it was designed for DoT champs and I think they could bring it back. But let's make this more interactive:
Whenever you hit an enemy with 2 abilities or effects within 2 second they start to burn for 2 (+5% AP / 8% Bonus AD) magic damage every second for 3 seconds. When the enemy that burns stands still for 1 second they will stop the burn.
How does that sound for a start? Got anything you want to add / change? I'm interested to hear your opinions.