Bleed - Deals a small amount of damage over time. If the victim moves, damage is tripled.

Fire - Ignites the target dealing damage over time for a while. Stop, drop, and roll (or just move around) to get extinguish the flame.

Ice - Makes you walk 10% more slow. Use or get hit by a fire weapon to thaw out. The friction from movement can also thaw you out. Enemies have a 30% chance not to move at all.

Petrify - Slows the attack and move speed of other players by 5% for each stack. Can stack up to 10 times. Enemies have a 30% chance to be petrified (won't attack, move, or regen this tick). 

Poison - Deals damage over time for a while. Using a potion can dispell this illness.

Shock - Gives entities shockingly bad accuracy (-30%) and spreads to neighboring entities.

Sleep - Puts the target to beddy-bye until they are hit or wake up on their own.