Auto Smelt - smelts certain ores as its mined
Bunny Hop - gives jump boost
Beheading - has a chance to drop the attacker's head
Cold Steel - applies mining fatigue to attacker
Striking - deals x2 damage
Speed - gives speed effect
Saturation - regenerates food points
Tunnel - mines/digs a larger radius
Ender Bow - shoots ender pearls instead of arrows
Exhaustion - applies hunger effect
Ice Aspect - gives slowness
Night Vision - gives night vision :p
Water Breathing - gives water breathing effect
Wither - applies wither effect
xp - drops more xp from mobs