Confirm Critical: After rolling a critical on an attack, you can choose to "confirm" your critical. Roll the dice again. On a 20, the damage is doubled again, on a 1 the initial critical is cancelled but the attack still hits.

Desperate Critical: Any player can turn an attack into a critical hit at any time, but suffer three levels of exhaustion as a result.

Death Saves: All death saves will be rolled behind the DM Screen and will be revealed after combat has ended.

Initiative: Any player can choose to lower their initiative before a battle begins.

DM DC: Saving throws and skill checks can be avoided if the DM is convinced himself. i.e Viscous mockery, Taisha's hideous laughter, persuasion, deception ect.

Potions: Potions can be consumed as a bonus action