Fortress Defense

While engaged in Fortress Mode, you gain a +2 to AC, spend your turn taking the dodge action, but gain an additional reaction, as well as the following benefits.

• Your reach becomes 15 ft.
• Other creatures provoke an opportunity attack from you when they enter your reach.
• When you hit a creature with an opportunity attack, the creature's speed becomes 0 for the rest of the turn.
• Creatures provoke opportunity attacks from you even if they take the Disengage action before leaving your reach.
• When a creature within 15 ft. of you makes an attack against a target other than you, you can use your reaction to make a melee weapon attack against the attacking creature.