I'm playing a mono-Green infect Pauper deck that relies heavily on instant-speed pump spells in order to win. My opponent ruins my day pretty badly by playing a Standard Bearer:
It occurs to me that I might be able to play one of these spells on the Standard Bearer, rendering it an illegal target for that turn, then play my other spells on my own creatures as intended. But will this actually work? I'm not sure about the subtleties of interpreting these effects when the target creature and the spell have different controllers, and I didn't get a chance to try it before the match ended.