Last Prism

Channeling chromatic beams into a focused prism

Last Prism drops from the Moon Lord as an endgame magic channel weapon. Upon holding down attack, it begins by emitting six separate swirling light beams of varying colors around the cursor. Over several seconds of continuous channeling, these individual beams converge inward, ultimately combining into a thick, concentrated rainbow beam. The weapon deals 100 base magic damage per hit with 0.25 knockback, striking multiple times per second once the prism beam fully converges onto its target.

Mana logistics and mythical enchantment

The weapon's extreme damage potential comes with severe resource requirements: its initial 12 mana cost multiplies drastically as the beam converges, draining mana reserves within seconds of sustained fire. To maintain continuous firing, players typically equip a Mana Flower alongside stacks of Super Mana Potions, accepting the Mana Sickness damage penalty in exchange for unbroken beam uptime. Compared to Lunar Flare, Last Prism produces vastly higher concentrated DPS against stationary bosses. Reforging to Mythical or Demonic provides the highest damage and critical output.

Trivia

• The weapon projects six distinct primary color beams before they merge into a single iridescent laser.
• The item tooltip quotes firing a lifeform disintegration rainbow.