Bard Class - Arcane Arts - Healing Question

I have a new campaign, and just added a new player that took the Bard class.

After a combat he was using the Arcane Arts move to heal other PCs (they don't have a cleric).

With no real restrictions out of combat (no real time pressures - no one trying to kill him) if he fails his roll (6-) it seemed like there was no real consequence, and so he turned into a healing machine.

I am wondering how other GMs have put restrictions or used narrative ideas in a context like this.

Or, does it matter - just let the PCs get their hit points back. Maybe make the Bard roll once, and use that as an overall success/failure/consequence check against the Bard's actions.

All help appreciated

WookieeDaddiee

A 6- is always a GM move. The fight ends, the bard starts signing up some healing, rolls a 6 and…

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Excellent advice - thank you.

I think converting my own thought process is so far the hardest part of Dungeon World.

Player Misses are the most fun you can have as GM :)