When using counterspell, do you add your spell attack or any other modifiers to your roll when trying to meet the DC?
An enemy casts an 8th-level spell. You cast counterspell at base 3rd level, which means you have to roll to meet the DC (equal to 10 + the spell’s level). In this case, the DC is 10 + 8 = 18. When rolling for counterspell, you roll a 16. Can you add your spell attack modifier or any other modifier to the spellcasting ability check to pass the DC of 18?