Skyrim Dragonborn DLC Walkthrough: Summoning Karstaag (Unmarked Quest) - IGN

Check out IGN's Guide to the hidden Side Quest in Skyrim's DLC - Dragonborn: Summoning Karstaag. To start this quest, reunite Karstaag's Skull with his remains in Castle Karstaag to summon the ghostly frost giant and defeat him. Defeating Karstaag will grant you the ability to summon him three times (outdoors only).
Check out IGN's Guide to the hidden Side Quest in Skyrim's DLC - Dragonborn: Summoning Karstaag. To start this quest, reunite Karstaag's Skull with his remains in Castle Karstaag to summon the ghostly frost giant and defeat him. Defeating Karstaag will grant you the ability to summon him three times (outdoors only).

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