Talk:Umr, Wielder of the Key of Compliance/@comment-186.4.236.5-20190619165949/@comment-29727671-20190619172355

It means you can choose how much power decrease each of the two SIGNI will get, up to 18000 power combined, you can even use all of it on one SIGNI and leave the other unaffected. The effect assures you can only use multiples of 1000, so you can't choose weird numbers like -1999, for example.