Gilus, Adept General

when Gilus, Adept General enters the battlefield put X 1/1 white knights on to the battlefield
Gilus, Adept General power is equal to the number of knights you control
If Gilus, Adept General is put back into the command zone, he does not cost more, but he loses 1 knight for each time back in the command zone (first time x-1,then x-2, Ect)