086505

ZTF has enabled the discovery of a new class of LINERs d_commaturning ond_comma into AGN with dramatic optical spectroscopic transformations. For the most rapid transition into a NLS1 comma real-time monitoring revealed the presence of a prominent soft excess and a luminous X-ray flare delayed with respect to the optical rise by 2 months. The proposed program will test physical mechanisms driving this new class of changing-look LINERs with joint XMM-NuSTAR observations by measuring the response of the reprocessed hard X-ray continuum in these nine objects. We wish to map out the structure of the accretion flow state change comma view for the first time this new class of changing-look LINERs in the hard X-rays comma and contrast their spectral properties with that of broad line and changing-look Seyferts.