The Terrarian is a Hardmode, post-Moon Lord yoyo which has a 11.11% / 11% (1/9) chance to drop from the Moon Lord boss. Similarly to the Flairon, it fires projectiles at a rapid rate that will home in on nearby enemies. The Terrarian is currently the most powerful yoyo in the game.
The Terrarian has the capability to be the single highest DPS melee weapon in the game when using the Yoyo Bag or Yoyo Glove accessory, which send out a second Terrarian to circle the first. It is identical in every way, including the green projectiles that the Terrarian shoots. When using the yoyo bag, the counterweights seem to deal equal damage to the Terrarian itself, without the projectile effect. Projectiles are fired with a use time of 6. Pressing a Terrarian against a 1-block-wide surface or a door will cause the projectiles to go through it, damaging anything on the other side of it. Additionally, if you are standing exactly 30’ away from a wall or door, then attempt to throw the Terrarian past the wall or door, it will clip through solid blocks until it reaches the cursor or its maximum range.
Its best Modifier is Godly, or Ruthless in overall melee damage.