Complex sentence: The Bishop is a spellcaster class that can learn all spells from Wizardry, which are Priest, Mage (Sorcerer), Psionics, and Alchemist.
Split into simpler sentences: The Bishop is a spellcaster class that can learn all spells from Wizardry. Which are Priest, Mage (Sorcerer), Psionics, and Alchemist.