Based on the latest market prices tracked on TCG Stacked, Banishing Light is worth about $0.12 USD for a regular copy and $0.15 USD for a foil copy
Then in your end step exile a random card from all foes, cast it for free, and then they eat damage equal to its cost - amazing free stuff and game winning life loss too
As with my maps deck, trying to make a core subset of suboptimal but super neat cards function in a way that still leads to fun games can be an enjoyable challenge
Ashiok, Wicked Manipulator can boost the tokens it creates while you exile cards here and there
To get different effects, one can try various combinations of shaders, images, blend modes, etc
As of now, however, I wouldnt really advise trying to force an artificer typal deck to work