I didn't know that only damaging moves affect Pressure. It's not in any smogon/showdown description and IIRC it affects stealth rock spikes too. Very confusing. Yet still, his phantom force only uses 1 pp instead of two. Something is wrong.Seems fine to me. Any multi-turn attack that Dragapult started after Corviknight had switched in had 2 PP deducted instead of 1. Additional turns of multi-turn attacks consume no PP at all. Self-targeting moves generally aren't affected by pressure at all of course.