Instant critter spawn.

1. Have lvl 3 garrison.
2. Enable [Creepy Crawlers]  decorations, so the battle pets spawn in your garrison.(need to do couple of quests) 
3. Kill ghostly critters with some sort of aoe like death and decay. Repeat.
4. ????
5. profit

Useful for http://www.wowhead.com/achievement=5...ter-kill-squad


There is a spot where two critters spawn near each other. Its right next to the Arachnis rare mob that spawns with decorations.