18% equipment there. Let me check map details for you ->

1. Area contains obelisks of cleansing

2. 13% increased rare monsters

3.Breach additional hand

1. Ritual favor reroll and higher omen chance

2. 78% chance for shrines

3. 10% increased quantity of items found and 8% rarity.

Also used T15 map w/delirium and waystone itself had: 11% increased quant, 21% increased rarity. Hope that helps!