The player has not moved or used items for 5 seconds, even when moving on Minecarts or Conveyor Belts. However auto-jumping accessories such as Frog Leg and similar items still count as movement, as does the continuous flight offered by Soaring Insignia. Being grappled into platforms and some other tiles simultaneously counts as movement because the hook resets after 10 minutes.
The Arkhalis or Terragrim are excellent weapons to deal with this enemy, as even a single hit forces to recharge its spin. In effect, they can act as a shield surrounding the player, completely impassable by the Enchanted Sword.
The enchanted sword can pass through blocks, however they can be hit through blocks by melee weapons.
The Enchanted Sword shares the same sprite as Excalibur, except with a blue glow. Both were introduced in the 1.1 update, during which Excalibur was the strongest sword in the game.