haven't fleshed this out completely, also i have looked but can't find anything about anyone coming up with a similar idea.
a dark troop. fairly weak vs housing space, short range unti whos DPS increases the longer it is engaged, just like single shot inferno towers.
its a dark troop, maybe a dark wizard that cast a spell and as the spell or attack goes on buildings/unts perish at increasing speed.
3 tiers just like inferno
L1 DPS 90-450-1200 HP 1220
L2 DPS 102-510-1360 HP 1360
L3 DPS 115-580-1550 HP 1500
20 housing space and archer towers and xbows do x2 damage maybe x3, havne't done the math yet.
no idea on what it would cost to build
thoughts? would be pretty fun to build a dark wiz/witch army

