How thorns (dual blader) works

That is confusing o.O

Hmmm maybe that can restrict people from putting more than 1 dual blader per party. If this class is mad strong, then people just put 30 dual bladers and go bossing like zak lol. So this is good news.

Naw, it just means they suck at coding. It *should* have been made to work at full power on all Dual Bladers, not just the one that casted it. But they totally forgot about it and made it work at half-power on everyone who receives the buff. And in your example, they'd just all go partyless anyway.