Whoa! What's that?
You almost missed it, a zonky spell just whizzed by your head. Spellcaster is an interactive text canvas where spells reign. A spell is a combination of one or more keywords that control it and other spells' movement, shape, color, and speed around the grid.
Click on Help if you're stuck and need some inspiration, or view all keywords at Cheatcodes.
Check out Spellcaster on Github. A project by Simon DeBevoise.