Mutagens: You employ toxins to enhance your abilities from this to your next rest. These effects include a +1 bonus and a -1 penalty to two traits of your choice and one of the following:

• Celerity. If you are restrained or vulnerable you can mark a stress to end the condition on yourself

• Durable your armor score increases by 2

• Hunter's Senses: You have advantage on any action roll you make to track a creature, and you can see in complete darkness.

Improved Mutagens: Improved Mutagens. When you choose a mutagen benefit, your options also include the following:

• Nerves of Steel. Whenever you must mark a Stress, you can spend 2 Hope instead.

• Rapidity. Your Evasion increases by 1.

• Ironskin. Your Severe damage threshold increases by a number equal to your Proficiency.

Volatile Toxins. You can choose two mutagen benefits instead of one. If you do, mark a Hit Point that can’t be cleared until you finish your next rest.

Mastered Mutagens: Mastered Mutagens. The trait bonus and penalty you get from your Mutagens feature changes to +2 and −2, respectively. When you choose a mutagen benefit, your options also include the following:

• Aetherblood. Within your line of sight, you can see creatures and objects that are invisible, and visual illusions appear transparent to you. If a creature or an object within your line of sight has been transformed by magic, you can see its true form.

• Fury. When you make an attack roll, you can mark a Stress to gain a bonus to the roll equal to your Proficiency.

• Steelflesh. Your Major damage threshold increases by a number equal to your Proficiency.