Elemental Ink Master

You have learned to harness the power of monster, demon, and devil blood through calligraphy to imbue your strikes with supernatural energy and enhance your abilities.

Initial Feat

• You gain proficiency with calligrapher's supplies.
• You can learn up to 4 temporary tattoos: 2 damage-dealing and 2 utility.
• You can apply two tattoos per long rest (one damage and one utility), which last until your next long rest.

Tattoo Application

To apply a tattoo, make a Wisdom (Calligrapher's Supplies) check against the DC listed for the blood type. Each successful application grants a +1 bonus to future checks with the same blood type (maximum +5).

Acquiring Ink 

Blood of special creatures is required to activate the ink with this feat.  A survival role is done to safely harvest the blood from the monster at the chart below.  An alchemy toolkit is required to make the ink from the blood and an alchemy role is performed at the dc below to turn it into imbued ink.  Only creatures that leverage an element can be used to create ink used in elemental damage tattoos.  None elemental blood can be leveraged for utility tattoos.

Blood Level Chart

Level 1 (Minor) - CR 0-3

1. Advantage on Investigation checks to find traps for 10 minutes once per long rest
2. Advantage on Perception checks for 10 minutes once per long rest
3. Cast Light cantrip twice per long rest
4. Understand one additional language for 1 hour per long rest
5. Gain proficiency with one tool for 1 hour per long rest
6. Purify one serving of food or water once per long rest
7. Gain 10 feet of climbing speed for 10 minutes once per long rest
8. Create a tiny illusion (as per Minor Illusion) at will once per short rest
9. Gain advantage on your next Stealth check once per long rest
10. Hold your breath for an additional 30 minutes once per long rest

Level 2 (Moderate) - CR 4-7

1. Cast Detect Magic once per long rest
2. Gain darkvision 30 feet for 1 hour once per long rest
3. Cast Disguise Self once per long rest
4. Speak with animals for 10 minutes once per long rest
5. Cast Comprehend Languages once per long rest
6. Gain proficiency in one skill for 1 hour once per long rest
7. Cast Feather Fall on yourself once per long rest
8. Create enough food and water for one person for 24 hours, once per long rest
9. Cast Locate Object once per long rest
10. Gain 20 feet of swimming speed for 1 hour once per long rest

Level 3 (Significant) - CR 8-11

1. Cast Invisibility on yourself for 10 minutes once per long rest
2. Gain flying speed equal to walking speed for 5 minutes once per long rest
3. Cast Tongues on yourself once per long rest
4. Gain tremorsense 15 feet for 1 hour once per long rest
5. Cast Water Breathing (self only) once per long rest
6. Gain resistance to one damage type for 10 minutes once per long rest
7. Cast Clairvoyance once per long rest
8. Gain the effects of a short rest in 10 minutes, once per long rest
9. Cast Sending once per long rest
10. Create an extradimensional space (as per Rope Trick) for 30 minutes once per long rest

Level 4 (Major) - CR 12-16

1. Cast Invisibility on yourself for 1 hour once per long rest
2. Teleport up to 30 feet as a bonus action once per long rest
3. Cast Alter Self once per long rest
4. Gain blindsight 10 feet for 1 hour once per long rest
5. Cast Dimension Door once per long rest
6. Gain resistance to two damage types for 1 hour once per long rest
7. Cast Arcane Eye once per long rest
8. Regain one-quarter of your hit point maximum once per long rest
9. Cast Divination once per long rest
10. Create an illusion that affects sight and sound in a 15-foot radius for 10 minutes once per long rest

Level 5 (Extraordinary) - CR 17+

1. Cast Haste on yourself for 1 minute once per long rest
2. Gain the effects of Foresight for 1 minute once per long rest
3. Cast Plane Shift (self only) once per 7 days
4. Gain resistance to all damage for 1 minute once per long rest
5. Cast Etherealness (self only) for 1 minute once per long rest
6. Gain truesight 30 feet for 1 minute once per long rest
7. Cast Telepathy (as per the spell, 1 target) once per long rest
8. Succeed on one saving throw automatically, once per long rest
9. Cast Polymorph (self only) once per long rest
10. Create a small extradimensional space (as per Mordenkainen's Magnificent Mansion, but only 10-foot radius) for 1 hour once per long rest

Tattoo Activation

As a bonus action, you can activate one damage tattoo or one utility tattoo. The damage tattoo lasts for 1 minute, while the utility tattoo's duration is specified in its effect.

Additional Rules

• A failed check consumes the blood but doesn't apply the tattoo.
• Higher power blood can be used for lower power tattoos
• The character must specify which tattoo they will create and always start at level 1.  5 successes grants the ability to attempt the next level.  Each successful creation of a given tattoo lowers the DC for that tattoo by 1 for the next attempt.  DC is reset if the Character learns a new tattoo to replace an existing one of the 4 known tattoos
• You can have a maximum of 1 damage tattoos and 1 utility tattoos active at a time. Applying a new one when you have the maximum removes the oldest of that type.
• Dragon tattoos' damage type is chosen when the tattoo is applied (fire, cold, lightning, or acid).
• Damage from tattoos applies only to the first successful hit each round.
  These are known Tattoo types, new tattoos can be attempted on a dc of 20 with unlisted blood.  Learning a new tattoo removes knowledge of one of the 4 known tattoos and starts from no plusses