For anyone who hasn't seen it, this is supposedly the datamined collab info:
[JP] CoC Collab Monsters info
Most Stage 1 only have Leader Skill, and Stage 2 will have Active Skill + same Leader Skill. Most are for skill up Norse Gods (make sense since SuperCell is from North Europe)
720/721 - CoC Barbarian - Light Element, Physical Type, Max Lv.25
Active Skill: Same as Thor!!! (721 only)
Leader Skill: 1.5x attack for Light Subs
722/723 - CoC Archer - Fire Element, Balance Type, Max Lv.25
Active Skill: Same as Freyr!!! (723 only)
Leader Skill: 1.5x attack for Fire Subs
724/725 - CoC Goblin - Wood Element, Attacker Type, Max Lv.25
Active Skill: Same as Freyja!!! (725 only)
Leader Skill: 1.5x attack for Wood Subs
726/727 - CoC Angel - Light Element, Healer Type, Max Lv.25
Active Skill: Same as Angelion!!! (727 only)
Leader Skill: Heals when matching orbs (similar to Siren/Angel)
728/729 - CoC Dragon - Fire Element, Dragon Type, Max Lv.50
Active Skill: Cause fire damage based on 50x own ATK toward 1 single enemy
Leader Skill: 2x ATK for Fire & Dragon subs
730/731 - CoC PEKKA - Dark Element, Demon Type, Max Lv.50
Active Skill: Cause damage based on 20x own ATK toward 1 single enemy, and heal the team as well.
Leader Skill: Similar to Ogre
So hooray if you have Thor, Freyr or Freyja! As for me, looks like I'll have a quiet week. I could skill up my angelion, but that would involve actually spending time skilling up an angelion, and I'm not sure if I'm prepared to do that....