1. It does enough or a lot of damage to kill you in one hit (in close range).
2. Touching a bolt can still hurt you a lot for the warlock to finish you off.
3. Warlocks like to use it in close range or behind corners to get EZ kills or save themselves.
4. Was ONLY able to dodge/survive it due to a warlock being bad in the game.
Amuse me on how you can possibly try to avoid it.
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Distance.