Kalista's Sentinels get stuck in the dragon pit.
This has been around for awhile, but
- Go onto summoners rift as Kalista
- Send a Sentinel (spooky ghost face), into the dragon pit
- Watch as it goes crazy inside of the dragon pit, but decides not to leave.
The spawn should patrol between two points, but it get stuck. Obviously, this is good for keeping a scout on dragon, since anyone walking past will have to kill it, alerting the enemy that there are people at the dragon pit.