Rules for Critical hits and misses

Defense Checks:

On a natural 20 on a defense check, the player can choose either to make an immediate attack with their reaction or to gain Advantage on their next defense check.

Weapon Crits:

Weapon crits happen when a player rolls a natural 20 on an attack roll or a natural 1 on a defense check.

Bludgeoning Weapons:

• Double dice of damage
• 2 points of exhaustion
• -1 to AC to a creature
• Target makes a Str save, DC= 8+Str mod+proficiency, or be stunned until the start of your next turn.

Slashing Weapons:

• Double dice of damage
• remove 2 hit die from creatures hit die pool
• -1 to AC instead
• Target makes a Con save, DC= 8+Str mod+proficiency, or has its speed halved until it finishes a short rest or receives magical healing.

Piercing:

• Double dice of damage
• 1d4 rounds of bleeding damage equal to the weapon damage die
• -1 to AC
• Target makes a Dex save, DC=8+Dex mod+proficeincy, or it drops any items it is holding.

Magic Crits:

Magic Criticals are triggered when a player rolls a natural 20 on an attack roll, a natural 1 on a defense check, or the target of a spell rolls a natural 20 on their save.

Spell Attacks:

• Double dice of damage
• -1 to AC
• Alternatively, you can choose to give an effect based on the elemental damage type; any of these can be negated by the target, making a Constitution save equal to your spell save DC.
• Fire: 1 point of Exhaustion
• Electricity: Stunned until the end of their next turn.
• Acid: 1d10 damage for 1d4 rounds
• Cold: Restrained until the end of their next turn due to shivering.
• Thunder: Stunned until the end of their next turn.
• Poison: Poisoned until the end of their next turn.
• Force: The target grants advantage on the next attack made against it before the end of its next turn.
• Radiant: Blinded until the end of its next turn.
• Necrotic: The target is vulnerable to the next type of damage it takes before the end of its next turn.

Spell Save Crits:

If a spell allows for a save on the spell's casting, then when the target rolls a natural 20 on the initial save for the spell, the caster rolls on the Magical Mishaps table.