Devil's Hand Leather (Lobophytum)
A variant of Devil's Hand Leather (Lobophytum sp.)

Representative Devil's Hand Leather image. A confirmed image of this exact morph isn't available yet.
A finger-lobed leather often sold alongside toadstools; the cap forms thick digit-like projections rather than a smooth mushroom cap.
Keeper tips for this variant
Hardy and undemanding — give moderate flow to keep detritus off the lobes; it also benefits from a weekly slough cycle, so don't be alarmed when it closes up.