Hexerei
Ziehe drei Karten.
Adamant — Falls drei oder mehr blaue Mana ausgegeben wurden, um diesen Zauberspruch zu wirken, wende Hellsicht 3 an.
If an effect allows you to cast a spell without paying its mana cost, you can't choose to cast it and pay unless another rule or effect allows you to cast that spell for a cost. Similarly, you can't waive a cost reduction unless that effect says you may.