Using an artifact pulls all nearby enemies toward you.
Enchantment book
The Gravity Pulse enchantment book grants level I. The Enchantsmith (in Brave Haven, Howling Woods, Frozen Highlands and Rainy Plains) applies it to an item and upgrades it to level II and III as the Enchantsmith's level rises; the book is kept and can be used any number of times. Enchanting needs Echo Shards.
The Gravity Pulse book drops in the loot of Ravines.
