Ugly and bad-tempered.
Bogrog will swap your Summoning
pouches for 70% of the Spirit shards
used to infuse them. He will also swap Summoning scrolls for 30% of the shards used to infuse the original pouch. To swap your pouches or scrolls requires a minimum of 21 Summoning and varies depending on the pouch/scroll (the level required is always several levels higher than the level required to infuse the pouch).