Combat
-Increases attack damage and speed
-Increases special critical hit chance
-Knocback increases when sprinting
Defense
-Reduces damage and knockback taken
-Increases health
-Sneaking further reduces knockback taken and gives regeneration
Mobility
-Increases movement speed
-Sprinting further increases movement speed
-Sneaking gives jump boost
Utility
-Increases block and entity reach
-Increases luck (makes loot better)