The term 'Caster Ballot' is composed of four words: VOTER (5 letters), WARLOCK (7 letters), SWIVEL (6 letters), and MAGE (4 letters). A VOTER is a person who casts a ballot in an election. A WARLOCK is a male practitioner of magic or sorcery. A SWIVEL is a device that allows something to rotate freely around a fixed point. Finally, a MAGE is a person who practices magic or sorcery. Together, these words form the term 'Caster Ballot, ' which is a type of voting system in which a magical practitioner casts a ballot in an election.