Portent

Portent is a Divination School Wizard passive feature which offers the user glimpses into the future. They gain two random Portent Dice which they can use as a  Reaction to substitute into Attack Rolls and Saving Throws rolled in range.

Description

Your dreams grant you glimpses that let you influence the future.

After each Long Rest, the user gains two random Portent Dice. During the day, they can use their reaction to change the die of an Attack Roll or Saving Throw rolled near them to one of their Portent Dice.

Each Portent Die can only be used once; unused Portent Dice are lost at the end of the day.

• Portent can only change a die in the favour of the caster and their allies.
  • Attack rolls can only be changed from a miss to a hit for allies, and from a hit to a miss for enemies.
  • Saving throws can only be changed from a fail to a success on allies, and from a success to a fail on enemies.

• Portent counts creatures marked yellow as allies.
  • This means if the user initiates combat by attacking an enemy marked as yellow, the user cannot change the target's saving throw from succeeding to failing, only the opposite. Be careful, as the game may prompt for this.

• Portent ignores saving throws that are not an immediate, built-in effect of an action.
  • Concentration saves, death saves, saves to end a condition early, and saves caused by Area effects, conditions, passive features, reactions, or exploding items (other than arrows and launched fireworks) are ignored.

Details

Recharge: Long rest

Grants:

•  Portent Die

How to learn

Classes:

• Class level 2: Divination School

Notes

• The available Portent Dice and their values appear on the reactions tab of the user's spellbook, and over the hotbar on the right side.
• Spending a Portent Die is done as a reaction, but does not consume a  Reaction.
• The value shown in the reaction window shows the current roll including modifiers, but Portent Dice replace the value before modifiers. This is why the reaction window may say something like "Rolled 17, needs 18", but the user can change it to a 15 and still succeed because they have a bonus of +3. In the reaction window, the user can hover over the number to see what they rolled, and what the modifiers are.
• Portent only needs either the target or source of the roll to be within range (18 m / 60 ft) - it does not require line-of-sight.
• Portent Die can cause an attack to become a critical hit if its value is in the user's critical hit range.
• The user can long rest or partial rest to replace their portent dice with a new full set.
•  Expert Divination gives its user an extra portent die each long rest, and a Prophecy each short rest to refresh one.
• Enemies with  Legendary Resistance that do not need it to initially pass a save will not use it to overpower a Portent reaction to the same save.

Bugs

• Portent does not trigger in the following situations:
  • An ally's attack misses due to rolling a natural 1 but the (modified) roll meets or exceeds the target's AC
  • An ally's attack misses and the Portent roll, if used, would be under the target's AC yet would critically hit due to an expanded critical threshold (for Portent Dice below 20)
  • An enemy critically hits but the roll is under the target's AC
  • An enemy save succeeds due to  Legendary Resistance
• Portent sometimes triggers unnecessarily due to misinterpreting critical hits or misses as non-critical, or wrongly assuming Portent Dice of 1 or 20 automatically fail or succeed a saving throw.