Thank you.
The first idea is a brilliant idea (able to left-click upon selecting cards), actually. I didn't think of that, and it would be pretty simple to implement while making the game in the jam. Thanks.
The second one however is intentional for performance purposes, as I had no perfect way to implement a less-laggy procedure for the enemy to come to the player. The enemy spawns with a ridiculously high radius, which lags the game, so it has to be somewhat in the middle to not crash the game much, and it is removed once it tags the player, and placing it in a variable for the physics process running the movement script. Hence the spawner is close to the coffin, but once I find a new way to implement better AI for huge mobs, I may actually spawn them beyond the screen.
Thank you :D