Emperor Shield (BT03/0104EN) (BT03)

[Cast Cost] [Pay 5 gauge]
If you have two or more «Tarot» on the field, you may choose not to pay the [Cast Cost] of this card.
You may only cast this card when your opponent casts an impact.
[Counter] Nullify the impact cast by your opponent. (Gargantua Punisher!! cannot be nullified, so it will not work!)