- Cripple: Cripples the creature with a certain chance and paralyses it for 10 seconds.
- Numb: Numbs the creature with a certain chance after its attack and paralyses the creature for 10 seconds.
Basically they both paralyze the creature but in 2 different ways:
- Cripple paralyzes sometimes the creature when you attack it.
- Numb paralyzes sometimes the creature when it attacks you
I don't really like any of them, and think they are pretty useless, but if you really want to buy one, I would go for numb if the creatures you hunt attack on the distance and often; or for cripple if they do not attack on the distance and you can use area runes spells on them