Complex sentence: After betraying the king and queen, Gramorr has taken control of Ephedia, but to gain total control of the kingdom, he must have the royal crown, which is protected by a spell.
Split into simpler sentences: After betraying the king and queen, Gramorr has taken control of Ephedia. However, in order to gain total control of the kingdom, he must have the royal crown, which is protected by a spell.