If I have no characters can I still play this event? — Statusunquo 1 10/16/17

No. Sacrificing a character is a cost ("do X to do Y"), if you cannot pay the cost, then you cannot play the event. — mplain 238 10/16/17

Do you have to OWN and control the character? Like if you steal a character from your opponent, can you sac that character? — kidohearts 1295 3/23/18

That works. You only need to control the character. — mplain 238 3/23/18

If my opponent plays this, do I wait for him to discard his character before playing a Hand's Judgement or, do I stop the event before he even discarded his character? — Letodan 13 4/12/18

First the cost is paid (sacrifice a character you control), then a target is chosen, then effects initate (play The Hand's Judgment here), then the effects resolve (discard the chosen enemy character). — mplain 238 4/12/18

When opponent used Coldhands to remove my char from the play... then is Coldhands targeted by Mutiny, what is order of actions? Mutiny player sacs Coldhands - does the removed characters re-enter game before chosing a target character to discard? — Floydos 59 5/31/18

Timing-wise you're okay, in step 4 you pay costs by sacrificing Coldhands and the removed characters return to play, then in step 5 you choose targets. However, FAQ (3.2) (better known as the Jeyne Westerling rule) says that in step 5 you can only choose targets that were eligible in step 1, when you first initiated the ability. And characters removed by Coldhands weren't in play then. So you cannot target them in step 5. — mplain 238 5/31/18