D&D Basic Monsters: Flying Sword

Animated objects, here in the form of a Flying Sword, have probably been with the game since the start (and not just as golems and undead). In original Player's Handbook, the spell Animate Object was part of a cleric's repertoire (as a 6th-level spell), but in 5th edition, the spell is no longer available for clerics, instead being part of the bard, sorcerer and wizard's spell lists.