Crossbone's Direct Arcane

You attempt to command the magical forces of a creature in the process of casting a spell. If the creature is casting a spell of 7th level or lower, you can choose new targets for the spell, using your spell attack modifier and spell save DC. If it is casting a spell of 8th level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell's level. On a success, you can choose new targets for the spell, using your spell attack modifier and spell save DC.

At Higher Levels. When you cast this spell using a spell slot of 8th level, if the targeted spell's level is less than or equal to the level of the spell slot you used, it auto succeeds.