Talk:Items/@comment-24915410-20180711011245/@comment-11372432-20180711013157

It does not nullify costs, as the time to use the Overturn is after the cost is done. Now note that TE Jack specifies “use”, not “cast”. It means it applies to any card. Also note that it cannot stop an effect call/equip/cast. Basically, if you play a spell that says “call a monster from your drop”, then it cannot nullify the call, but it can nullify that spell.