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Absorbative is an Invention perk that gives a 20% (22% on a level 20 item) chance of reducing damage by 5% per rank. It can be created in armour gizmos.

Absorbative effectively provides a 1% damage reduction per rank. However, Absorbative does not reduce hard typeless damage (typeless damage that is unaffected by defensive abilities). Additionally, Absorbative does not work in PvP combat.

It can synergise very well with cryptbloom armour and the Animate Dead spell when in encounters where multiple different sources of incoming damage are present, increasing the players survivability significantly.

There is no visual indication when this perk triggers.

Average damage reduction for the different ranks of the Absorbative perk. The damage reduction in parentheses correspond to placing this perk on level 20 gear.
Rank Reduction per hit Average damage reduction
1 5% 1% (1.1%)
2 10% 2% (2.2%)
3 15% 3% (3.3%)
4 20% 4% (4.4%)
  • A calculator for this is at the top of this page.
  • Assumption :
    • The enemy is dealing damage with anything that is not hard typeless.
  • is the rank of the Absorbative perk.
  • is the proc chance of Absorbative to activate (.2 normally, .22 if the Absorbative perk is on level 20 gear).
  • when or . This represents summing over all possibilities where integer represents the amount of hits prior to the proc of Absorbative. The probability of Absorbative proccing on hit is therefore .
  • is the random value uniformly sampled between the enemy's minimum hit and maximum hit. The describes different sets of hits. The sets are regenerated for every new value of .
    • has elements with integer . This is the damage taken before the perk procs.
      • Clarification : This does mean that for that there are no elements in this set.
    • is the damage taken from a single hit when Absorbative procs.
    • The set of values in for integer is the same in both the numerator and denominator of the ratios for any given .

Damage reduction
  • The average ratio of damage taken, , from Absorbative to that of without Absorbative is
  • The average damage reduction is then, after some rearranging,
  • This can be simplified if the assumption is that every value integer , integer is taken to be the same . In this scenario, there is no random element and the above is then only dependent on the proc chance. This simplification is increasingly accurate in the limit of large . A table is provided at the top of the page.

Using these simplifications, the damage reduction reduces to

Sources[edit | edit source]

MaterialRarityPerk ranks with X materials
Standard gizmoAncient gizmo
Fungal components.png
Fungal componentsRare01222–3011222–333–44
Strong components.png
Strong componentsUncommon011–21–21–20111–21–21–21–31–31–4
Plated parts.png
Plated partsCommon0011101111111–21–2
Padded parts.png
Padded partsCommon0011100011111–21–2

Suggested gizmos[edit | edit source]

Gizmo layout Possible perks Approx costs
Fungal components.pngFungal components.pngFungal components.png
Fungal components.pngFungal components.pngFungal components.png
Fungal components.pngFungal components.png
See RS:Material prices for details on how prices are approximated.
Fungal components.png
Fungal components.pngFungal components.pngFungal components.png
Fungal components.png
See RS:Material prices for details on how prices are approximated.
Healthy components.png
Fungal components.pngEvasive components.pngFungal components.png
Fungal components.png
  • Other possible perks:
See RS:Material prices for details on how prices are approximated.
Subtle components.png
Fungal components.pngFungal components.pngFungal components.png
Flexible parts.png
  • Other possible perks:
See RS:Material prices for details on how prices are approximated.

Update history[edit | edit source]

This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!
  • patch 22 February 2016 (Update):
    • The Absorbative perk no longer uses the 30 seconds of charge.