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Fleeting Expertise increases Ability Efficiency but reduces Ability Duration of Warframe abilities.

Stats[]

Rank Ability Efficiency Ability Duration Cost
0 +10% -10% 6
1 +20% -20% 7
2 +30% -30% 8
3 +40% -40% 9
4 +50% -50% 10
5 +60% -60% 11
Energy Cost Unranked
(+10%)
Rank 1
(+20%)
Rank 2
(+30%)
Rank 3
(+40%)
Rank 4
(+50%)
Rank 5
(+60%)
100 90 80 70 60 50 40
75 67.5 60 52.5 45 37.5 30
50 45 40 35 30 25 20
35 31.5 28 24.5 21 17.5 14
25 22.5 20 17.5 15 12.5 10
10 9 8 7 6 5 4

Drop Locations[]

Mission Drop Tables

Mission Type Source Rotations
or
Drop Table
Chance[1] Quantity[2] Avg. per roll[3] Star Chart Nodes
Orokin Vault Orokin Derelict Vault A 4.17% 1 0.0417

Any mission node on Deimos except Cambion Drift, Magnacidium, Exequias, and Hyf

Enemy Drop Tables

Enemy Drop Table Chance[4] Item Chance[5] Chance[6] Expected Kills[7] Quantity[8] Avg. per roll attempt[9]

Sourced from official drop table repository.

Notes[]

  • The cost of abilities or their drains can not be less than 25% of their original value. Because of this, Ability Efficiency has an indirect cap of +75%.
    • This means that if combined with a maxed Mod TT 20px Streamline, any Fleeting Expertise rank above four lowers overall duration without increasing efficiency.
    • If your total Duration is below 100%, the excess efficiency above 175% will still count towards abilities that drain energy over time.
    • Efficiency is capped at +75%, however the cap is applied to the result; Therefore efficiency used to compute drain is not capped, although drain is capped.
  • Abilities that drain energy over time (such as Immolation130xWhite Immolation or Peacemaker130xWhite Peacemaker) will have varying benefits from this mod depending on the amount of Duration Mods you equip.
    • Duration mods on these abilities affect the actual length of one second of energy drain.

Tips[]

  • Benefits abilities that are not affected by duration the most. Thus, it is recommended to equip this mod on Warframes or builds that are not heavily reliant on Ability Duration (such as MagIcon272 Mag or a Desecrate130xWhite Desecrate-oriented build for NekrosIcon272 Nekros).
  • A combination of Mod TT 20px Continuity and Mod TT 20px Constitution can almost completely negate the Ability Duration penalty of this mod.
    • Also, if using a fully ranked Mod TT 20px Primed Continuity, Ability Duration is only affected by a very small amount of 5%, versus a 2% affect of Mod TT 20px Continuity and Mod TT 20px Constitution, but with the advantage of only costing one mod slot and using less mod space.

Gallery[]

Patch History[]

Update 10.3 (2013-10-09)

  • Introduced.

See Also[]

  1. Chance to roll item within drop table
  2. Amount rewarded on successful roll
  3. (Quantity × Chance)
  4. Chance to roll drop table
  5. Chance to roll item within drop table
  6. (Drop Table Chance × Item Chance)
  7. (1 / Chance), see WARFRAME Wiki:Expected & Nearly Guaranteed Numbers for more details
  8. Amount rewarded on successful roll
  9. (Quantity × Chance), average item quantity on a roll attempt (successful or not)
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