1): E-gacha from Gambit Event 4
2): E-gacha from Elite Guard Event 3 with Dark Airu
3): E-gacha from Elite Guard Event 3 with Dark Airu
4): E-gacha from PeroColo Event 2 (Missing from what I've seen at beginning of event)
5): E-gacha from PeroColo Event 2 (Also missing at beginning)?
Feel free to correct me. Last 2 I'm not sure about since posts seems hazy. So to answer your question yes, people have got these cards before, need to pay for them though.