Sneaking
When a character or enemy enters stealth they roll using their sneak bonus, record this roll.
A character cannot enter stealth if an enemy has them in their line of sight.
If a character or enemy is sneaking, all characters and enemies that have line of sight to the sneaking character must roll Cognition or awareness with an SR equal to the sneaking character’s sneak roll. This must be done at the beginning of each character’s turn before taking any actions.
Only characters that succeed the roll can see the sneaking character
If a character or enemy attacks while sneaking, and the target has failed to see them, the attacker rolls with advantage.
Different actions can affect your sneak roll, anyone that is sneaking must roll sneak again at the end of their turn and apply any of the following modifiers incurred during their turn:
Moving greater than half your movement speed in a single full action gives a -3 to sneak.
Flying causes the character to have -5 to sneak, unless they have stealth soaring or hovering wings
Damaging an enemy, running into an enemy, triggering a trap, casting a spell, or speaking to someone more than 5 feet away reveals you and causes your stealth to end.