Defeat a swamp mosquito via magic or exotic damage.
For defeating one that spreads disease, the Powers have granted thee a Mark. You have been granted the Mark of Pestilence! You gain 37 practices!
Note: I was both plagued and poisoned for this mark, using an exotic weapon but the killing blow was magic dart.
Note: Flames damage worked @ level 225 29-9-2010
Note: Ice Wind worked @ level 221 02-12-2010
Note: Telekinetic Explosion worked @ level 227 12-2-2010
Note: Iceball worked @ level 175 1-1-2011
"Note: telekinetic punch worked at lvl 226 3-19-2011"