We split into groups and do all events in Dry Top in order to achieve tier 6 of the Favor of the Zephyrites before the sandstorm starts.
On tier 6 the costs of items offered by the Zephyrite merchants are the lowest and there are also additional items available.
The merchants offer recipes for Ambrite weapons, Zephyrite Lockpick (needed to open the chests during sandstorm) and other items that are needed to craft specific ascended gear.
Tendril A -> Tendril B -> Shaman -> Vine Bridge / Serene -> Basket
Crash Victims -> Inquest Leader -> Light Golem -> Ley Line Hub
Skritt Supplies / Rustbucket -> Beetles -> Inquest Suit
Race -> Moa -> Queen / Frog -> South Mine -> Town -> North Mine
Dust Mites -> Haze -> Devourer Queen -> Rare Creature -> Giant -> Dust Mites -> Haze -> Twister -> Skritt Queen -> Dust Monster -> Beetle
Event table: https://wiki.guildwars2.com/wiki/Dry_Top/event_table
Possible valuable loot
Prices according to orders in trading post
Out of Buried Locked Chests during sandstorm (Zephyrite Lockpick needed):
- Unidentified Fossilized Insect (Needed for Ambrite weapons)
- Ascended chests
- Unopened Crystal Shard Kite (~2 gold)
- Unopened Prosperity Mine Kite (~2 gold)
Event on wiki:
Items offered by geode merchants: