Atlas cast pass without trace allowing Pin to create magical gate silently. He is first step through the gate followed by everyone with their backup plans.
It only take a short moment for creatures to smell you ande rise, but that moment is sufficient for Pin to cast his magic.
Unfortunately only one of two creatures turn
Jerinvar, seeing that complete his spell on the second creature just the moment before it open it's mouth.
Leopard stops instantly, though the snakes on it's shoulders keep hissing at you a few more seconds before calm down.
Atlas follow you ready to back you up with halucionations, but the job is done. You have one creature polymorphed into a frog and another creature is charmed for the next hour.
OOC:
What do you do? Archfey is expecting 3: two alive Kamadans and one dead. You have one at the moment :)