Is it just me, or is Deathfire Touch a bit weak?
Really.
20% AP (the same as the old spellblade mastery combined with a Nashors) over 3 seconds. On AOE and DOT spells, it deals 10% AP over 1.5 seconds.
Honestly, I can barely notice it.
Compare it to the others in its tree 15% healing off of crits and gain attack speed. 3-8 physical damage onhit, stacking up to 10 times (up to 30-80 damage)