Does they Hyrda Team Ability stack on itself? Say I have 2 hand ninjas adjacent to an enemy with Wolverine AoH giving them the TA to their CC attacks. Is it -2 to the enemies def or does it stop at -1?

It stacks with normal rule of 3 restrictions

Jon Jonz is correct!

Red King is also correct.

jtallday is spot on.

Finally. I might have to update my sig line.