First printing includes 230 cards with square-cut corners. It does not include any concentration indicator in spell duration entries, and also omits the card for the 5th-level mislead spell.
Version 2 includes 231 cards (adding mislead) with rounded corners and diamond-shaped "C" concentration indicators in spell duration entries.
Version 3 includes 257 cards—incorporating Arcane Archetypes (18 cards) and 8 additional cards—in the same format as version 2. Deck includes 21 cantrips, 39 1st-level spells, 38 2nd-level spells, 34 3rd-level spells, 27 4th-level spells, 29 5th-level spells, 21 6th-level spells, 16 7th-level spells, 15 8th-level spells, 12 9th-level spells, 3 blank cantrip cards for Warlocks, and 2 blank 1st-level spell cards for Warlocks.