Pandaria Broken Quests

[Casbaby01]

I am currently playing a night elf and have come across 2 quests so far that are broken/bugged:

1. Natures reprisal - you receive the ireseeds to go kill some imps, but when you try to use it, it keeps saying they are an invalid target.

2. Druid of the Claw - you receive the voodoo charm and are supposed to go through an automatically opening door into the adjacent room to kill him, however the door does not open.

[Casbaby01]

Currently at level 30 and have come across multiple broken/bugged quests