When an ally you can see or hear casts a spell that you also have prepared, you may use your reaction to expend a spell slot. Add one of the following effects to the triggering spell. The effect is determined by the level of spell slot expended:
1st level spell slot:
- Double the range of the triggering spell
- The triggering spell affects one additional target
- The triggering spell attack has advantage
2nd level spell slot:
- Double the area of the triggering spell
- Creatures affected by the triggering spell have disadvantage on the saving throw
- Change the type of damage dealt by the triggering spell
3rd level spell slot:
- Double the damage dealt by the triggering spell
- Double the duration of the triggering spell
- Pick any one effect from the 1st and 2nd level lists above
Comments