Unstable Transfusion
⭐ RARITY: UNCONFIRMEDCommunity sources disagree on rarity (Common vs. Uncommon). Until an official note clarifies it, we list it as Unconfirmed. Gameplay effect is consistent across sources.
🧪 What Bloodmark Does
Unstable Transfusion gives each hit a 35% chance to add a Bloodmark stack. Bloodmark stores pending damage, normally resolves after its timer, and resolves immediately when the stored amount becomes lethal.
Key Takeaways
- Current on-hit chance: 35% per copy.
- Bloodmark damage scales with player level, Damage multiplier and stack count; it is not a percentage of enemy max HP.
- Use Damage plus weapon-appropriate Cooldown or Quantity to create stronger, more frequent applications.
🔓 Unlock Method
Unlocked by default. No quest or shrine requirement—this item is in your pool from the start.
🔗 Best Synergies & Builds
Core Item Synergies
Bloody Cleaver
Also applies Bloodmark (and boosts on-hit odds). Together they ramp stacks quickly on bosses.
Lifesteal Items
Pair Bloodmark stacking with sustain so you can stay aggressive while face-tanking crowds.
Regen / Medkit
Prevents chip damage from ending your streaks as you farm stacks.
Weapons that Stack Fast
Once stacks are rolling, swap to heavier single-target damage (or keep stacking) to finish bosses quickly.
📋 Patch & Meta Notes
v1.0.49 (Dec 25, 2025): the official Christmas Patch increased Bloodmark chance from 27% to 35%. The current values throughout this page use the post-patch 35% chance.
❓ FAQ
What’s the proc chance?
35% per hit.
Does Bloodmark stack?
Yes. More stacks = faster kills, especially on elites/bosses.
How do I unlock it?
It’s available by default.
