2 certificates were on the ground, but I could only hold one. Tai got no certificate despite the work.

Thanks Tai. Both of you were credited for the right Pianus, but your own share was worked out from what you had seen of the fight since you last walked back in, and after falling and returning that was nearly nothing. A boss's EXP is now shared out from the whole fight, however many times you fall and return. On the certificates: Pianus leaves one certificate per defeat, and it is a one-of-a-kind item, so a player already holding one cannot pick up a second. Please try Pianus again and tell us what each of you receives.