Reduce Phantom damage, give it a proper spray pattern + 3 extra magazines instead of 2 to provide an actual alternative to the Vandal.

Vandal is the better gun after the magazine nerf, and it reflects in the pickrate. It outperforms the Phantom in mid to long range engagements, and bulk of the duels in pro-games takes place at such distances. At close range the phantom is better in theory but practically speaking pro-aim pretty much removes any difference between the two guns. I don't have an actual stat, it is purely based on what I've observed from watching Champions.

By increasing the bullet count for the phantom to pre-nerf numbers and giving it a set spray pattern makes it a dedicated rifle for spraying and spamming smokes. This would actually make it the superior gun, which is evidenced by the Masters pick-rates, and to balance it back down reduce the damage at 15 meters+ range so it takes 2 head shots to kill armoured enemies. Valorant gun mechanics have always prioritized burst firing and tapping instead of spraying down, and the Vandal is just better for this purpose. With the proposed changes I imagine teams will start having players on both guns with differing responsibilities.