The Survey: your atlas of the deep

The Survey board in The Ember Depths: how to earn Survey points, all 31 nodes with their ranks and costs, loot-only effects, and respec at the Temple.

The Survey is a board in the Cartographer's Lodge (level 4). You earn a Survey point the first time you clear a dungeon's chart Pristine at a new best tier, and spend it on nodes that shape what drops where. The whole board costs 76 points. Nodes change loot and maps only, never your hero's stats, so your Power stays exactly what it was.

The board

Five act regions, one for each Act. Each is a short chain: every node needs the one before it. Only charts and breaches of that act feel its nodes.
The Ember region sits in the middle and works everywhere. Its nodes open as you spend points.
A locked node tells you how many more points it needs.
Favoured Dungeon: pick one dungeon of the act and its charts drop twice as often. You choose when you buy it.
The board also keeps a tally of dungeons charted Pristine at Tier 4, 8, 12 and deeper.

Every Survey node (31 nodes, 76 points in all)
Region	Node	What it does	Ranks	Points per rank	Needs
Act I	Favoured Dungeon	Pick one Act I dungeon: its charts drop twice as often.	1	1	open
Act I	Deeper Charts	+7% per rank that an Act I chart drops one tier higher.	3	1	Favoured Dungeon
Act I	Inkwell	+15% per rank ink from Act I charts.	2	1	Deeper Charts
Act I	Held Open	Act I breaches stay open 10 minutes longer for you.	1	1	Inkwell
Act I	Extra Mark Slot	+1 Mark slot on Act I charts.	1	1	Held Open
Act II	Favoured Dungeon	Pick one Act II dungeon: its charts drop twice as often.	1	1	open
Act II	Deeper Charts	+7% per rank that an Act II chart drops one tier higher.	3	1	Favoured Dungeon
Act II	Set Hunter	+10% per rank set-piece odds on Act II chart bosses.	2	1	Deeper Charts
Act II	Extra Mark Slot	+1 Mark slot on Act II charts.	1	1	Set Hunter
Act II	Held Open	Act II breaches stay open 10 minutes longer for you.	1	1	Extra Mark Slot
Act III	Favoured Dungeon	Pick one Act III dungeon: its charts drop twice as often.	1	1	open
Act III	Deeper Charts	+7% per rank that an Act III chart drops one tier higher.	3	1	Favoured Dungeon
Act III	Twin Charts	+10% per rank that an Act III chart boss drops two charts.	2	1	Deeper Charts
Act III	Extra Mark Slot	+1 Mark slot on Act III charts.	1	2	Twin Charts
Act III	Held Open	Act III breaches stay open 10 minutes longer for you.	1	1	Extra Mark Slot
Act IV	Favoured Dungeon	Pick one Act IV dungeon: its charts drop twice as often.	1	1	open
Act IV	Deeper Charts	+7% per rank that an Act IV chart drops one tier higher.	3	1	Favoured Dungeon
Act IV	Set Hunter	+10% per rank set-piece odds on Act IV chart bosses.	2	1	Deeper Charts
Act IV	Extra Mark Slot	+1 Mark slot on Act IV charts.	1	2	Set Hunter
Act IV	Held Open	Act IV breaches stay open 10 minutes longer for you.	1	1	Extra Mark Slot
Act V	Favoured Dungeon	Pick one Act V dungeon: its charts drop twice as often.	1	1	open
Act V	Deeper Charts	+7% per rank that an Act V chart drops one tier higher.	3	1	Favoured Dungeon
Act V	Twin Charts	+10% per rank that an Act V chart boss drops two charts.	2	1	Deeper Charts
Act V	Set Hunter	+10% per rank set-piece odds on Act V chart bosses.	2	1	Twin Charts
Act V	Extra Mark Slot	+1 Mark slot on Act V charts.	1	3	Set Hunter
Ember	Chart Sense	+10% per rank chart drop chance, everywhere.	3	2	6 points spent
Ember	Ember Magnet	+10% per rank embers from Ember Breaches.	3	2	6 points spent
Ember	Flawless Eye	+10% per rank item rarity on Pristine clears.	2	3	14 points spent
Ember	Shardfinder	+10% per rank Survey Shard chance on Pristine clears.	2	2	Flawless Eye
Ember	Hunter's Ledger	+15% per rank unique-item chance on chart bosses.	3	2	24 points spent
Ember	Grand Twin	+10% that any chart boss drops two charts.	1	3	34 points spent

Respec

The Temple's Rite of the Surveyor refunds every point you've spent for 500 gold per spent point (38,000 gold for a full board). Points are never lost.