User blog comment:B214/Light Novel Volume 16 spoilers/@comment-24053170-20131028203100/@comment-180.194.239.147-20131028211440

1.) Rizevim's special power probably works like a barrier where any attack or effect generated by a SG will be nullified..

2.) I don't think the aspect of time-stopping of Gasper's SG will be evolved further; since his powerup is already insane.