Ambusher (feat)

You are well-trained in guerilla warfare, and gain the following benefits:

• You add a d4 bonus die bonus to your initiative checks. If your campaign uses static initiative, you only add half the maximum roll of your bonus die.
• When you attack a creature that is surprised, you add a d4 bonus die to on the attack roll.
• You can't be surprised while you are conscious.
• Other creatures don't gain advantage on attack rolls against you as a result of being hidden from you.