The Prop ability is Osiris' most pointed and damaging attack when used against a single target. It knocks most enemies into the air and keeps them there so that it can be followed up with the Shredder attack (upgrade to Prop) to add even more damage.
Ultimately, as a method of getting an enemy into the air, this attack is generally inferior to other attacks. It doesn't get them quite as high and there's no method of quickly following often times letting the enemy fall closer to the ground before you can give chase. However, Prop is one of the best methods for deflecting projectile attacks. Look at the enemy and then turn slightly to the left before performing this attack. This will cause the spinning blade to make a circular barrier between you and the enemy. It is important to time it correctly however because the amount of time between performing Prop and then being able to perform Shredder is quite long compared to the time it takes a projectiles to be shot.
