I don't recommend you use this at high level, it's mostly for fun. Swim Speed compliments the weapon nicely, Quick Super Jump works well because it will need to get back into action faster after the Respawn Punisher debuff, Sub Saver is there to throw two bombs on a full tank, Recovery is there because why the frick not, and MPU increases the one-hit hitbox of Rollers, useful on a short range roller such as this.