"Dance for me your dance of death!"; "Let the music play!"; "I will mourn your death!"; "Are you ready to rock?"; "Feel my gentle kiss of death."; "That's what I call easy listening!"; "IIIIEEEeeeeeehhhHHHH!".
A banshee, according to the irish myth, is the spirit of a deceased woman that is an omen of death or generally a messenger from the underworld. On Tibia, a banshee is a beautiful woman who has been betrayed and committed suicide, but death did not accept her sacrifice and sent her back.
To all vocations it is recomended to use a Garlic Necklace. It is as weak as a Dragon and can be compared to it in some other ways too.
Mages should use an energy or icerod/wand combined with ice or energy Strike. Be ready to follow them, as they run in fairly low health, but watch out for a second attack as they can heal (and return) relatively quickly. Trying to take on more than one banshee at a time can be dangerous and is not recommended for lower levels. Demon Skeletons can be useful to help blocking and killing.
Paladins need space to run and use healing spells to remove paralysis. Knights could use a two handed weapon to kill fast, most damage you will take come from life drain (not blockable). You can attempt them from skills 65/65 and level 50 on. Be ready to use 3-4 strong health potions and 7-8 mana potions to exori it down.