If you want the base Zero Point Sprite from chests, this is the weekly appointment you keep.
Watch guide video
Location pathing tips often paired with Monday Power / Mastery windows.
When it runs
Every Monday at 9 AM ET (13:00 UTC) Mastery Monday begins and lasts 24 hours through Tuesday 9 AM ET. The live countdown on the home page tracks the next open or close.
What is boosted
Legendary and Mythic Sprite spawn rates rise in Sprite Chests. Sprite XP is doubled. Sprite Dust from extractions is doubled. Extra Portable Extractors often appear across the map — perfect insurance for a Mythic find.
Best for: Zero Point, Dream, Punk and other high-rarity targets
Also great for: pushing Level 4 Sprites to mastery on 2× XP
Not primarily for: Gold finish hunting (see Power Hour)