[Darkmatter]

Which one would probably hurt the most? Think about it. Dieing by a bonespear would probably hurt, whereas being blow to smitherens by a Corpse Explosion might not hurt if you die instantly. What about being cracked into ice shards? Cleaved by a rampaging Whirlwind? The possibilities are somewhat hard to think about, seeing as such deaths couldn't happen today likely. But just use your imagination if you have any doubts.

Personally, I've always thought of being in the edge of a Druids anger scale, and having him cast Armegeddon and let everyone die around him. Running around and eventaully being crushed by a tire-sized meteor, then feeling you burnt body crisp and your bones crackle. Grim death indeed.