Dear Crows, let me give you a quick overview on the DARK Domain of Crowfall and which Major and Minor Disciplines they give you access to. If you want to check out what each Specialization Class brings to the table check out my Races and Classes Guide.
CREDIT: I want to thank Tinnis, who made an invaluable contribution by providing the descriptions of the disciplines I could copy paste as captions to you can search the disciplines and their abilities.
DARK DOMAIN DISCIPLINES
Corrupted Soul • shrivel (attack: blackmantle; disease; expose punish)• soul steal (attack: deals damage to enemies in a field, returning health) 
Dead Eye • multi-shot (attack: cone damage five enemies)• careless whisper (passive: basic attacks buff crit stats) 
Defender • hunker down (field increase damage; resist all)• dig in (passive: crit defense on low health) 
Lightfoot • forest step (attack: blink to a targe and strike)• escapolgy (passive: gain increased resolve from control effects) 
Poisoner • poisoned blade (attack: adds the poison buff to yout attacks)• poisoned weapons (passive: basic attacks now deal poison damage) 
Windlord • pursuit (self buff: increases movement speed for a short duration)• first wind (passive: regenerate when low health) 
Blood Rose • blood rose (passive: healed targets gain thornshield buff) 
Concussive Trap • concussive trap (trap: stuns targets) 
Explosive Trap • explosive trap (passive adds burning to traps) 
Faerie Flames • faerie flames (decrease target’s mitigations, prevent stealth) 
Faerie Trap • faerie trap (passive: traps now reduce mitigation and block stealth) 
Fortified Stakes • fortified stakes (passive: increase radius and effectiveness of stakes) 
Heads Up • heads up (group increase perception; remove expose) 
Recon • recon (stealth: exposes target) 
Serrated Trap • serrated trap (passive: add a bleed to your traps) 
Toxic Trap • toxic trap (passive: adds blackmantle to yout traps)