Skill 4

From: Goldie's Bingo Game on Day 203
Form: bright pink bingo chips. When you hold it you'll have the urge to shout "Bingo!" Once you do, you'll receive your skill.

Skill: Glasses flash

But what does that even do:
♔ I don't
♔ Guys Haruki is actually stereotypical student council pres now
♔ Bullying everyone now

So that means what:
♔ I will only use this skill for the power of good and also harassing people
♔ This is the most useful skill