Taunt's description implies that if you're taunted and use a multi-target card, you must include the person who used it on you as one of the targets, but can still select others; however, in practice, it limits you to only targeting the person who taunted you (so if you play a Chop, for instance, you will only be allowed one target.) If that's intended, the description should have the word 'only' inserted into it, since currently it's not behaving the way it says it will (which can be an unwelcome surprise when you were relying on multi-target effects to get around it.)
Specifically, it should say "Whenever target character plays a card that targets a character, that card must only target the owner of this card, Duration 2."