Someone on reddit discoverd many civics in stream:
Civic Effects Requirements
Agrarian Idyll Farms now produce 1 Unity Pacifist, not Authoritarian
Inwards Perfection +30% Unity, +5% Happiness for citizen pops Pacifist, Xenophobe
Police State -20 Unrest not Fanatic Egalitarian
Beacon of Liberty +15% Unity Egalitarian, Democratic Authority, not Xenophobe
Technocracy +1 Research Alternatives Materialist
Meritocracy +1 Leader Skill Levels, +1 Leader Pool Size Democratic or Oligarchic Authority
Shadow Council -50% Election Influence Cost Democratic, Oligarchic, or Dictatorial Authority
Cutthroat Politics +1 Influence -
Environmentalist -20% Consumer Goods Cost -
Mining Guilds +10% Minerals Production -
Parliamentary System +50% Faction Influence Gain Democratic Authority
Efficient Bureaucracy +2 Core Sector Systems -
Functional Architecture -15% Building Cost -
Mechanist Start the game with 4 Robot pops plus tech to build more Materialist, no Syncretic Evolution Civic
Syncretic Evolution Start the game with 4 pops of a randomly generated subservient species No Fanatic Purifier or Mechanist Civic
Fanatic Purifiers +33% Fire Rate, +33% Army Damage, allows Armageddon bombardment stance, cannot use diplomacy, gains unity from purging xenos, automatically purges xenos in borders Fanatic Xenophobe, Militarist, no Syncretic Evolution
Imperial Cult -33% edict cost, makes ruler title "God Emperor" Authoritarian, Spiritualist, Imperial Authority
Warrior Culture +20% Army Damage, -20% Army Upkeep Militarist
Aristocratic Elite -50% Governor Recruitment Cost, +4 Empire Leader Capacity Oligarchic or Imperial Authority
Exalted Priesthood +20% Governing Ethics Attraction Spiritualist, Oligarchic Authority
Nationalistic Zeal +10% Border Range, +1 Maximum Rivalries Militarist
Philosopher King +2 Ruler Skill Levels Dictatorial or Imperial Authority
Citizen Service +15% Naval capacity Militarist, Democratic or Oligarchic authority, not Fanatic Xenophobe
Distinguished Admiralty +8% Fire Rate Militarist
Free Haven +50% Migration Attraction Xenophile
Slaver Guilds +10% Slave Food Output, +10% Slave Mineral Output Authoritarian
Idealistic Foundation +5% Happiness for citizen pops Egalitarian
Corporate Dominion +10% Energy Credits Egalitarian, Oligarchic Authority
Subspace Ephapse +15% Naval Capacity Hive Mind
Natural Neural Network +5% Research Speed Hive Mind
Ascetic -20% Consumer Goods Cost Hive Mind
One Mind +15% Unity Hive Mind
Divided Attention +2 Core Sector Systems Hive Mind
Strength of Legions +20% Army Damage Hive Mind
Subsumed Will +1 Monthly Influence Hive Mind
Pooled Knowledge Leader Skill Levels +1, Leader Pool Size+1 Hive Mind
https://www.reddit.com/r/Stellaris/comments/62g21n/egx_stream_info_civics/