Updated Opportunity Attacks

Any Action or Interaction that leaves you vulnerable to being Attacked can trigger an Opportunity Attack from enemies within melee range

Actions that would provoke an Opportunity Attack include but are not limited to:

1. Standing up from Prone
2. Drinking a potion
3. Loading a crossbow
4. Opening a door
5. Picking a lock
6. Using a complicated mechanism or puzzle
7. Casting a spell that has both somatic and material components
8. If moving out of melee range without taking an attack first
9. Attacking when flanked, flanked creatures besides the target get an Opportunity Attack