Mobs can be Taunted during a Banish. Communicate to your tank when the effect is seconds away from wearing off, they will appreciate the notice as it will allow them to place a Taunt effect on the mob and keep it from running out of melee range.
As with other Crowd Control abilities, it can be useful to employ the "Focus" system, especially with a macro such as this one.
If you cast Banish two times on the same target then the effect will end.
Despite Banish being considered a Magic effect it cannot be dispelled.
Damage over time effects applied to the target who is affected by Banish will continue to count down but will cause zero damage.
May be used against on another warlock's minion.
May be used on elementals such as a Mage's Water Elemental or a Shaman's Fire and Earth Elementals.
May be used on a Restoration Druid who is in Tree of Life form.
Patch 5.1.0 (27-Nov-2012): Banish is now effective against Aberrations.
Patch 3.2.0 (04-Aug-2009): Effect will now be cancelled if Banish is recast on a banished target.
Patch 3.1.0 (14-Apr-2009): Now has a 6-second PvP duration.
Patch 2.3.0 (13-Nov-2007): Banish can no longer be cast on targets tapped by other players or groups.