Metalblood heart

A metalblood heart is an artificial body part added by the Anomaly DLC that acts as a replacement for a ghoul's heart. It gives a ghoul the ability to become more resistant to damage for a short period of time at the cost of move speed and a vulnerability to fire damage.
== Acquisition ==
It can sometimes spawn on hostile ghouls, however they cannot be harvested from them.
== Summary == 
The metalblood heart is a ghoul exclusive body part. It has a part efficiency of 100%. This fully replaces the functionality of a normal heart but provides no statistical enhancement - when coupled with the heart body part having a Blood Pumping importance of 100%, it results in a directly proportional increase in blood pumping when replacing a heart with impaired efficiency. Blood pumping, in turn, affects Moving. Moving, in turn, affects the following stats: . For further details, see those pages.
Pawns with the heart installed have access to the "Metalblood injection" ability while drafted. The injection must be manually initiated by the player through use of a gizmo available while the ghoul is drafted and selected. Colonist ghouls will never independently use the injection. It is currently unknown whether NPC ghouls will use the ability.
The injection lasts for and provides the same "Metalblood" effect as metalblood serum, namely:
* Incoming Damage Multiplier, stacking multiplicatively with our sources such as the Tough trait.
* Flame damage
* Burn damage
The injection has a cooldown of . Note that it does not stack with other sources of the metalblood hediff. 
The metalblood heart inflicts a penalty to move speed - this applies at all times, not just while the metalblood injection ability is active.
Artificial hearts are also immune to heart attacks and artery blockages, preventing future cases and curing existing ones.
By installing an artificial heart, the pawn's natural heart, if perfectly healthy, is harvested without a penalty. This organic heart can then be sold or stored for later use.
=== Installation ===
The metalblood heart can only be installed in ghouls. Note that despite the description noting pain as the reason it cannot be installed in other pawns, methods of pain nullification such as painstoppers do not allow the hearts installation into other pawns.
Installing the part requires of work, and a Medical skill of 4. Unlike most operations, this operation cannot fail and the pawn is not anesthetised. Like other ghoul body parts, the replaced basic ghoul heart is lost.
Removing the part requires ? of work, 1x herbal medicine or better, and has no Medical skill requirements. This operation can fail. But if successful, it will kill the ghoul.
== Analysis ==
Before metalblood serum is available, the metalblood heart is better than the adrenal heart, if you don't need the move speed bonus.
When metalblood serum is available, another heart upgrade should be used instead, because the effect of the metalblood heart doesn't stack with that of the serum. This makes the metalblood heart only necessary if you still don't have a steady supply of bioferrite or twisted meat to make the metalblood serum.
The alternative method to get metalblood, a dose of metalblood serum costs bioferrite, twisted meat, and lasts 5 days, for an average of bioferrite and twisted meat per day. This can be improved by only taking the serum right before combat.
== Version history == 
* Anomaly DLC Release - Added.
Category:Medical Item Category:Body Part Category:Artificial Body Part