Thanks for bearing with me through the downtime and/or late updates. The core issue behind both has (hopefully) been resolved, so things should be stable now.
Card Rarity X X X X
  SSR SR R N
High stat X X X X
  Vocal Visual Dance Balanced
Idol Attribute X X X
  Cute Cool Passion
Skill Type X X X X X X X X X X X
  Perf. Lock* C. Guard Combo Bonus Score Bonus Healer H. Guard Overload All-Round Concen. Skill Boost Focus
Awakened?   X
  Yes No

(Short link)

Click on an underlined table header to sort the table by that value. Do note that you should apply filters before using the skill-based sorts, as you can't really compare skill effects.
Card VoViDa Skill Effect (sort: time window, % chance, duration, effect val.)
Sato Shin
Happy New Yeah !
5030 3281 2709
世界めぐる幸せ Every 9 seconds: there is a 40..60% chance that you will gain an extra 12% combo bonus for 4..6 seconds.
Shibuya Rin
Happy New Yeah !
4704 3001 2457
祝いの花束 Every 13 seconds: there is a 40..60% chance that Perfect notes will receive a 17% score bonus, but become harder to hit for 6..9 seconds.