HP Thief is an Thief skill in Octopath Traveler.
Effect[]
A single attack that hits twice and steals 50% of the total damage dealt as HP for the attacker. The maximum health that can be stolen is based on the enemies remaining HP before you attack, not the damage displayed; if an enemy is killed by the attack, you will heal half of what the HP they had before you attacked.
Damage Dealt = 2 hits x 1.1 x [Attacker P.Atk - (Target P.Def x 0.4625)]
Boost: Increase damage dealt by +80% per boost.
Other Multipliers[]
- All damage scales with the level of the attacker (see Level Multiplier)
- All damage has a random multiplier (from x0.98 to x1.02) applied to it for each hit
- Critical hits deal x1.25 damage.
- Hitting an enemy with a weakness to Daggers deals x1.3 damage (or x1.5 with Stronger Strikes); hitting a Broken enemy instead deals x2.0 damage
- The
Increased Physical Attack buff on the attacker or the 
Decreased Physical Defense on the target increases damage by x1.5; with both, the total multiplier is x2.25
For more details see Damage Formula.
Synergies[]
Skills[]
- Aelfric's Auspices applies the Aelfric's Auspices buff for 3 turns, causing this skill to trigger twice for no additional cost, dealing double the damage and stealing twice as much HP
- Abide applies the Increased Physical Attack buff to the user
- Lion Dance applies the Increased Physical Attack buff
- Sealticge's Seduction applies the Sealticge's Seduction buff for 3 turns, causing this skill to apply to all applicable targets, instead of one (all foes), stealing HP from each
- Armor Corrosive applies the Decreased Physical Defense debuff to one foe
- Take Aim applies the Increased Critical and Increased Accuracy buffs to all allies
- Divination applies the Divination buff, causing this skill to critically hit for ×1.25 damage
- Fire Rune and other Runelord runes will activate a follow-up hit
Support Skills[]
- SP Saver halves and rounds down the SP Cost of this skill
- Summon Strength increases the Phys. Atk. stat by +50
- Surpassing Power increases the damage cap of this skill to 99,999
- Heightened Healing on the equipping character multiplies the HP/SP restored by ×1.3
- Eagle Eye increases the Critical stat by +50
- BP Eater multiplies the damage output of boosted skills by an additional ×1.5
- Stronger Strikes multiplies the damage of attacks targeting an unbroken foe's weakness by ×1.5, instead of ×1.3
- Fortitude increases the damage of physical attacks by +6% for every 1% of HP below 33% the equipping character has, up to a maximum of ×3 damage at 1 HP
- Physical Prowess applies the Increased Physical Attack and Increased Physical Defense buffs indefinitely
Trivia[]
- HP Thief is the counterpart to Steal SP.