Warcraft 3: HellHalt TD #18 - Killer Level 3...
I was greedy, yes I know. If I played more often, I would have known that Sea Giant was considered "under-building" in the carry lane for level 3. (I thought I would have been fine, but obviously not)
Going 9/3 was just terrible, especially since I already knew furbolgs are bad vs 3. I completely overestimated how strong sea giant was.