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Backpack Battles

Mage

Katana Harold Build

Tier B 上級者向け

Katana Harold Build

Core Mechanic

The Hateful Hat class item, Harold, applies Regeneration with high probability when you take a debuff and deals magic damage proportional to the healing.

In the early game, sharpen the Katana with Whetstone and push damage through Harold's crit-rate buff. From there, the build branches into lifesteal/mana-stack or ice variants — a flexible style. Because the trigger is debuffs on yourself, plant self-harm sources like Pestilence Flask or poison spear.

Recommended Subclass: Hateful Hat

Hateful Hat is mandatory at Round 8. Harold is the centerpiece.

Core Items and Placement

Item Role
Harold Class core; debuff triggers Regeneration + magic damage
Katana Main damage weapon; sharpened with Whetstone
Whetstone Sharpens Katana
Cap of Discomforts Self-debuff source
Mana Orb Mana supply
Amethyst Deliberately strip your own buffs

Center Harold and place Katana nearby. Place Whetstone adjacent to Katana to maintain its boost. Add self-debuff sources (Cap of Discomforts, etc.) around them.

Build Order

Early game (Rounds 1-6)

Prioritize Whetstone and Katana. Move Wooden Sword → Katana.

Mid game (Rounds 7-12)

Take Hateful Hat at Round 8. Center Harold and place Katana + Whetstone around. Splice in self-debuff sources.

Late game (Round 13+)

Branch decision: lifesteal / mana-stack or ice. The former adds Bloodthorn-line items, the latter Frozen Flame-line items.

Tactics and Positioning

The unique structure is "self-debuff to trigger Harold". HP management matters — don't rely solely on Harold's Regen, run Healing Herbs alongside. The late-game branch decision changes the win condition, so judge based on shop offerings.

Difficult Matchups and Counters

  • Sustained-debuff opponents: matchup is not bad, but HP can dip hard. Healing Herbs help.
  • Buff-strip: removing Harold buffs hurts.
  • High armor: even Katana can struggle to pierce. Mix in a Double Axe.

Variations

Lifesteal branch: Bloodthorn + Harold for lifesteal + magic damage hybrid. Ice branch: Frozen Flame + ice weapons for defense + offense. Pairing with Rainbow (Rainbow Potion) is hard for placement.