Hello
Wanted to share that I have made this website where you can print out your dnd e5 spell cards.
The colour of the spell cards can be customized and you can filter out the spells based on class, subclass, level or individual spells.
The cards are printed out on at A4, and are 2.5x3.5 inch which also fit in magic the gathering sleeves.
Should all be covered by the open source license as far as I understand and I link to the license. Fingers crossed they stay chill…