Scrying Mastery is a ritual feat available to adventurers with the Ritual Caster feat, and who mastered Wizard's Sight and one other Scrying ritual. The feat was introduced in the article Heroic Tier Rituals.[Dr405]
The ritual caster with this feat who makes an arcana check, insight check or perception check as part of a scrying ritual may roll twice and use the higher result. The DC to sense a scrying sensor created by the caster increases by 5.
Once per day, the ritual caster with this feat can ignore the component cost of a scrying ritual of their level or lower that they have mastered.