Planetary equilibrium temperature vs. tidal heat flux per unit mass, adapted from Figure 5 of D. Z. Seligman et al. (2024), showing the most promising rocky planets for tidal volcanism. Heat fluxes are normalized by the uncertain tidal quality parameters, point sizes are scaled by planet size, and color indicates the favorability for atmospheric characterization through transmission spectroscopy (E. M. R. Kempton et al. 2018). The difference in tidal heat flux per unit mass for LP 791-18 d spans more than three orders of magnitude for the damped vs. nondamped eccentricity states.