Tomonoshin will be unrestricted, and Obstruct put to 1! Check out the details on the official site.
Magic School, Sephirot
■ [Cast Cost] [Pay 1 gauge] ■ [Set] (This card remains on the field.) ■ [Counter] [Act] When your opponent casts a spell card, pay 1 life, and discard an «Art» from your hand. If you do, nullify the spell cast by your opponent. You may only use this ability once per turn.