Dragonthrone

Critical Hits

When you roll a natural 20 on an attack roll, you deal max damage for the attack plus the weapon dice for the weapon you were using.

Critical Fumbles

When you roll a natural 1 on any roll, the DM may cause your character to fail in some way that makes your life worse.

Opportunity Attacks

Opportunity attacks are also triggered by standing up within reach of an enemy's melee attack.

Skill Checks

natural 20 is always a success. A natural 1 is always a failure.

Potions

It only takes a bonus action to quaff a potion.