That can be as simple as cards like Thoughtcast and Thought Monitor, or as powerful as something like Jin-Gitaxias, Progress Tyrant
Deflecting Swat needs little introduction to many Commander players, and Untimely Malfunction doubles as a two-mana target-switching effect that occasionally blows up a threatening artifact
Feature: Navy, Donquixote Pirates
Hurkyl, Master Wizard The Brothers War s Hurkyl, Master Wizard is an advisor built to refill your hand after a turn of casting lots of noncreature spells
As Gabe Newell once said, Piracy is a service problem. In the context of Magic, the service problem is just the high cost of cards
Countermagic It is nice to have the odd counter in the slower lists as they are such rounded means of protecting and disrupting