The graphics, animation, and sound are all pretty good. The controls are pretty smooth, although I wasn't crazy of having to click directly on an enemy in order to attack it.
The central premise of reacquiring the deck in order to get your magical abilities back is a great way to tie the central mechanic of every Metroidvania game to the theme.
Note that it was not always clear which parts of the environment were "solid" for the player character to collide with or stand on.
Also, when dying in the boss battle, the Respawn button does not work. The game has to be reloaded.