I have a Phantasmal Dragon in play. My opponent casts Unsummon on it. In response, I cast Cancel on the Unsummon. Do I sacrifice my Phantasmal Dragon because it was the target of the Unsummon, or does countering the Unsummon make it's targeting invalid?


It was still targeted.

You choose targets as part of the process of casting a spell, which has to happen before a spell can be countered. And the moment you have chosen something as a target, it has been targeted.

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