Teaming might have marginal benefits. Say if one person have hashirama, he'd be helping the other two.

Or, say for 3 wind main that normally uses gnw tenten, wb asuma, iruka, one of them change gnw tenten for onoki. A different player c*e the onoki for the second fight.

Ofc, if you c*ready cap it, then it's kinda meaningless to team up. I wonder how much damage that takes....

The boost is for everyone.

So if there are say 30 players in the group who each usually get 30 per attempt but with the boost gets 35 per attempt, then between all of them, they'd get 300 extra coupons. And if they take turn boosting, then every 30 summons, everyone would be 100 coupon richer.

Of course, different people get different amount of coupon w/ and w/o boost, the average difference might not reach 5. And most group don't have that many active players etc so it's kinda meh.

Jib Edit: Thank you for always helping the community. I just had to slightly edit this post so its more in line with forum rules =)