Share 'The Impact definition'

So I was having a discussion with another Disc Golfer about how Discraft should put the Nebula into production, that way they would complete the trio (Comet, Meteor, and Nebula) He corrected me in saying the Impact is the third disc. I began arguing that the Impact belongs in the group with the Zone and the Focus (In the Zone, helps you Focus, and Impacts your game). What do you think, is the Im…