Allied Knight. Some of the deck defender's statistics are based on the character who drew the Knight card. Where the deck defender stat block refers to "you," it refers to that character.
Folded Versatility. After finishing a long rest, you can refold the deck defender's shape, changing it to acrobat form, berserker form, or guardian form.
Fragile. If the deck defender is reduced to 0 hit points, it collapses into a haphazard pile of nonmagical playing cards and can't be resurrected or reconstructed.
Multiattack. The deck defender makes a number of attacks equal to half its proficiency bonus (rounded down).
Paper Cut. Melee Weapon Attack: PB + +3 to hit, reach 5 ft., one target. Hit:7 (1d8 + 3) slashing damage.
Reckless Strike (Berserker Form Only). Melee Weapon Attack: PB + +3 to hit (with advantage), reach 5 ft., one target. Hit:10 (2d6 + 3) slashing damage, and attacks made against the deck defender until the start of its next turn have advantage.
Protection (Guardian Form Only). When a creature the deck defender can see attacks a target other than the deck defender and is within 5 feet of the deck defender, the deck defender imposes disadvantage on the attack roll.