From what I understand, Copycat Puppet allows you to effectively have 2 of a, presumably, powerful unit. Also, the original/puppet can pair up with someone else giving them their pair up bonuses. One example, is keeping the puppets far away, and rally them, heal them, use a tonic, etc.
Warp, if used right, allows you to basically rush someone down. This is especially deadly with high movement allies, and even Copycat Puppet.
Galeforce is good on ORKO builds. Usually involves crit stacking, Aggressor, Prescient Victory, etc. Even though it requires units to be solo, it's still pretty deadly.