In case anyone wanted more feedback on this move. Here's Lumeley's response via Reddit.

'It lets the child-thing try to use it on someone against their will.

There are a number of ways you can handle the attempt mechanically, depending on the child-thing's and the other character's exact approaches to the situation.

So, yes, the child-thing can in principle do it against someone's will, but there's no guarantee that the child-thing gets to do it against their will.'

One of the options for The Mother's Heartbeat is 'You can bring someone in and out with you'
Can this be used against someones will?

The two last questions are found in the Advanced moves Idealist. He gets to add two questions to his Valor list.

I think I will ask the player which of the questions still feel relevant to his outlook. If there are some that he doesn't feel fit then we can work together to make some new ones.

Either way, the player and I have some ideas to move forward with but we wanted to see if the boards had any advice. Thanks for your thoughts Uzio they have been helpful.

The acts that have lead to this fall are, one he has turned to a vampire and while he used to feed on animals to keep himself as he thought it 'good' he has started feeding on humans. The second thing was that he gained an evil magical assassins cloak that would only allow its powers to be used if he murdered someone for no reason and that is the evil act that pushed him over the edge.

The character also doesn't have a god. In the world we created there are only three gods and the power is passed on to an other every hundred years or if the god is killed the victory then becomes a god. The character used to be a Paladin but when his god was killed we thought the Knight variant class had less of a divine presence.

These are the questions from the Knights Valor move.
VALOR
When you enter a dangerous situation, answer the following questions:
? Am I acting to protect another or in the service of a higher ideal?
? Are the odds greatly against me?
? Am I acting without expectation of a reward?
? Am I making a reasonable attempt to avoid violence?
? Am I acting within the law?

They very clearly have a good flavor to them with the 'avoiding violence' and the 'protecting another' concepts. I was thinking of creating a Strife move and changing the questions to be like so.
? Am I acting to benefit myself?
? Do I have a clear advantage?
? Will I be rewarded for my enemies defeat?
? and so forth

I am by no means trying to punish my player this is something we are working on together to try and progress the story. We have talked about whether his character is going to try and stick to his Valorous behavior to try and return to his good ways or if he wants to land in a more neutral place. I think the only reason this has come up is that the Paladin and Knight have such a clear alignment motivation behind their class. If he was say a fighter this wouldn't even be an issue but hey where's the fun in that. Thanks for the reply.

Here's a quick Custom Move I made up. Any thoughts?

Identify

When you have some quiet time you can study an item you know to be magical to reveal some of what it does; roll +Int.

On a 10+, choose two from the 7-9 list.
On 7-9, choose one from the list below.
- You decipher the items command word. Tell the MC how this happened and he will tell you what the command word is. Do you activate it?
- As you study the item it imparts to you a hint of its use. The MC will give you a one or two word description of what the item can do.
- You remember some historical fact about the item you’re inspecting. The MC will ask you two questions about the items origin.
- The item reveals it’s secrets to you but at a cost. The MC will tell you the cost and you can decide if you think it is worth it.

I was wondering what the common practice for magical item identification was. I haven't seen any specifics in the book other than the Wizard move Enchanter. Are there any good custom moves or could you just use Spout Lore and Discern Realities straight up. Thanks for any help.