Mutant Treasure Keys
How many keys are we supposed to have as of today? I've done 4 paths and used 4 keys. I keep seeing that today was supposed to be the 5th key? Can someone ease my mind and tell me today was only the 4th and possibly post the objectives? I can post a pic too of which paths I've done.
Side note: I've only done legendary as well no other paths
Thank you in advance