Dematerialize

You attempt to interrupt a creature in the process of casting a spell by sequestering the spell’s material components. If the creature is casting a spell of 2nd level or lower that includes a material component, you can hide away all of the spell’s material components or the arcane focus being used in place of those components in an extradimensional space until the end of the creature’s turn, at which point they are returned to the creature. If the creature’s spell cannot be cast without the included material components or substituting arcane focus, its spell fails and has no effect. If it is casting a spell of 3rd level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell’s level + the number of unique material components the spell includes. On a success, you can hide away all of the spell’s material components or the arcane focus being used in place of those components in an extradimensional space until the end of the creature’s turn, at which point they are returned to the creature. If the creature’s spell cannot be cast without the included material components or substituting arcane focus, its spell fails and has no effect.

If you successfully hide away material components for a spell that would consumed by the spell, and the spell fails as a result, the included material components are not consumed by the spell, and are returned to the creature at the end of the creature’s turn.

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the interrupted spell’s material components are hidden if its level is less than or equal to the level of the spell slot you used.