This is a pretty fun take on the theme. Congrats on making this and submitting!
The animations and summoning are really cool effects. You nailed that feeling of using your enemies against them. Just needed a little more polish. I gave up on level two because I couldn't get the skeletons in right places before they got attacked or hit the wrong wall. It would be nice to be able to "restart" a skeleton's movement by hitting it with another bone because even if they're attacked once, they freeze and it's a little frustrating.
Cool game though! Keep making games!