ownership

Everyone is free to work on whatever part they're interested in. This is just meant to be a rough overview for new contributors which areas are currently "understaffed" and could use some love.
The "Ancestors" column is basically there to list currently inactive developers that might still be around to provide implementation details on Discord. In that case please use the Search function and make a decent effort to understand the code first, unnecessary pinging for simple things might give you a bad reputation :P
Please also try to check back a bit after your PR gets merged in case it causes any bugs on snapshots.

DevOps

Concept	Owners	Ancestors	Example tasks
PC Releases	friarsol	Agetian	- update Maven dependencies
Android Releases		kevlahnota
Sentry	JaminCollins		- watch for rare/unusual crashes

Ingame Engine

Concept	Owners	Ancestors	Example tasks
Ability Effects	friarsol, Hanmac, Northmoc, TRT		- support new mechanics - debug complicated reports - improve stackdescriptions - research rulings - compare with Arena
Adventure	TabletopGeneral	Grimm

Magic Metadata

Concept	Owners	Ancestors	Example tasks
Deck generation		Austinio
Netdecks	churrufli
Editions	Snoops	friarsol
Images		kevlahnota

User Interface

Concept	Owners	Ancestors	Example tasks
Desktop
Android		DrDev, kevlahnota	- test new libGDX versions
Localization		Alumi	- update card translation files - update engine text (native speaker not required)
Sound effects

Forge Script DSL

Concept	Owners	Ancestors	Example tasks
Card Scripting	TRT, Northmoc, Simisays, Fulgur14, Dracontes	a lot	- implement new Sets - review script PR - clean up outdated elements - apply Oracle updates
ForgeScribe		Austinino

Modes

Concept	Owners	Ancestors	Example tasks
Quest	friarsol
Network Play		JaminCollins
Gauntlet
Draft
Planar Conquest		DrDev
Puzzle	Agetian
Headless
Adventure (Content)	TabletopGeneral, Simisays	Grimm	- balancing

Artificial Intelligence

Concept	Owners	Ancestors	Example tasks
Effect APIs	Hanmac, Agetian
Combat	Agetian, TRT
Limited
Simulation		Myrd
DeckHints

Miscellaneous

Concept	Owners	Ancestors	Example tasks
Documentation			- update Wiki