A Collection takes the place of a hero's Artifact and comes from exploring the Ghoulish Gallery, which opens after Chapter 6 and allows seven explorations a week. Each one has its own skill, raises the holder's Health, Attack and Defense by a percentage that grows over ten levels, and has 3 attack slots, 3 defense slots and 1 common slot for etched abilities, opened as it levels.
Raising an ability's quality costs 20 for Rare, 40 for Elite, 80 for Legendary, 400 for Mythic and 500 for Mythic+ Recasting Elixir, with Limited Recasting Elixir spent first.
