mangosR2/mangos — comment on commit 7365d2d0dffc524693df9b526f72b6aa230ab30d
File:  line 0
By tibbi:

SPELL_ATTR_EX5_REMOVE_AT_ENTER_ARENA removes the demonic circle at arenas start, not at knockback. So without my fix, the warlock would still have 5 seconds after the arena starts to cast the demonic circle, up in the tube.
also SPELL_ATTR_EX5_REMOVE_AT_ENTER_ARENA should be proly renamed to SPELL_ATTR_EX5_REMOVE_AT_START_ARENA