  The axion-nucleon coupling enables the production of axions through the decay
of excited ${}^{57}\textrm{Fe}$ isotopes, and axions produced in the Sun
through this process are often a target of helioscope searches. We show for the
first time that hot, highly magnetic white dwarfs such as ZTF J1901+1458 are a
viable target to search for the X-ray signature of axions that were produced by
the ${}^{57}\textrm{Fe}$ transition in the core and then converted to photons
in the magnetosphere. We calculate that a 100 ks observation of ZTF J1901+1458
with NuSTAR would constrain the coupling of axions to nucleons and photons at a
level below the bounds of both current and future planned helioscopes.
