Before when my server was still very active with 20+ people doing 9 tails, I always buy the Kage buffs (30 coupons) and always end up 1st. Now that my server is 3/4 dead, I don't buy the Kage support anymore coz I always get 1st place if the spender in our server is not participating and 2nd if he is around.

Question: If I buy 3 Kage support, will it become 40% damage boost since Masked Man Obito gives 1 Kage Buff Scroll (10% damage boost) or 30% damage boost is the max?