A sort of common trope I encounter in pbta games is moves with a partial that has you succeed but with the effect “lasting only a moment” (or some similar phrasing). The example I am going to work with is Zuko Style from Dungeon World. The text from that move reads:
When you bend a flame to your will, roll+WIS. On a 10+ it does as you command, taking the shape and movement you desire for as long as it has fuel on which to burn. On a 7-9 the effect is short-lived, lasting only a moment.
From the Dungeon World SRD
Some of these moves (all that I am aware of) tend to have a problem where this partial is sort of all or nothing. That is depending on what you are trying to do it either means a partial is indistinguishable from a success or it serves to do nothing (essentially a silent failure). For an example of an “all” case (in my experience most cases of ZS tend to fall into this category):
The players have a plan of attack, their comrades are in wait on a nearby hill and the party is finally in their place. The agreed upon signal is a burst of flame in the sky. When the time comes they pull a fire starter from their adventuring gear, set of a spark to bend it into a skyward burst. The dice hit the table and come up an 8.
Here we have an issue since the effect was only meant to last a moment the partial is no different than a success. There are plenty of interesting things that could happen here that would certainly make good partials but none that seem to fit the wording of the move.
Here is an example of a “nothing” case:
While the players were distracted fighting off the occultists the library of esoterica was caught in the blaze. Scorch-Skin jumps into action swiping their hand to extinguish the flames. The die are cast, and come up 8.
Here extinguishing the flames for a moment is about as useful as not extinguishing the flames at all. And to make matters worse what is almost certainly going to happen next is that Scorch-Skin is going to just try again. It amounts to pretty much just a silent failure.
What ways should a GM handle a partial on Zuko Style that exemplify the principles of Dungeon World? My goal i a solution I can use in any pbta game, but I have chosen to ground the question specifically in Zuko Style and the rules of Dungeon World, so anything beyond that is extra. I’m looking for answers that don’t involve modifying the move itself or breaking the rules of Dungeon World.