
Has a niche interaction with Runic Axe which can regenerate charges, potentially 2/turn. Gives you a hefty skill boost on turns when you don't need to murder something.
Can also be used with Living Ink for 3 zero-cost charges, if you really want to spend an action and two cards to get that bonus.
The problem remains, several years on, that no one that can take it really needs a 7-willpower card that requires setup to play. Mystics generally have good enough willpower already, and those charges are usually better spent doing the thing the asset does.