A way to make DFT Feel viable and to Be good

I have been testing http://vignette3.wikia.nocookie.net/leagueoflegends/images/7/71/Deathfire_Touch_mastery_2016.png/revision/latest?cb=20151103094525 on multiple champs and I feel that due to it's nature it should be tweaked a bit to feel and be more viable (the two things are different I must say). And it is a good moment because recently Warlord's was tweaked. NOTE: that it is viable in most mages, but the ticks of damage deal low damage and it feels bad (even if the damage is actually good), this change s meant to correct that without chaging the damage capacity of the mastery.

#Feel: It's low damage ticks are (psychologically speaking) dissapointing, even with full magic pen or full ratios both early and late they feel lame. A way to solve it is to make it sum up the numbers in the way Darius bleed, GP passive Trial of Fire and other DPS sum up their numbers, of course the ideal way to do so would be to make it with small sized numbers. This is now specially true because it deals damage each 0.50 seconds, 1 damage for each 0.50 seconds, it is really low and some times it deals 0 damage. It would also be more rewarding if you constantly re-apply it. **NOTE: **This is only about the display of the damage and doesn't modify the damage itself of the mastery.

#Be: It is** DEATH**fire Touch, it should reward you somehow when you apply it on enemies that are low in life: how? When Deathfire Touch is applied upon enemies with less than 20% of their max life it is applied with it's full duration (except in DoT abilities) and deals true damage. NOTE: that it's ratios are not touched, and Im only changing the way in which DFT is being applied, it would specially benefit it's AD users that do not build magic pen.