Now any champion with a damage over time spell, that is ap oriented will dominate with Blackfire Torch. All of Teemo's abilities, Casseiopia, Singed, Brand, Rumble etc. On top of this it makes them tanky. I feel that champions like Teemo will face roll this. I mean 5%, over 3 seconds, of max health every auto attack. There is nothing even coming close to that in terms of poking ability. Here is the math of it. Blackfire torch deals 5% of max health over three seconds. 5/3=1 and 2/3, times four because that is how long Teemo's poison lasts + 5 from the last tick of Teemo's poison. That amounts to 11 and 2/3% of max health from one auto attack, not counting in the damage from the poison and on hit effect of his E.
My team once this map is released would be AP Teemo, Wukong, and Nunu or Cho.