Thor - The World Eaters (2011)

Collects Thor (2007-2011) #615-621 & 620.1.
In the wake of SIEGE, Asgard is a target. And what happens when a dark, destructive force from another reality comes on the warpath? Plus: The nefarious Grey Gargoyle, on a quest for immortality, sets out to attain godhood in Asgard. Thor, God of Thunder, must end Gargoyle's rampage!