Streamline

Effect and rank bonuses

Streamline grants +5% Ability Efficiency at rank 0, +20% at rank 3, and +30% at rank 5. Its maximum rank is 5. The available details do not specify how Ability Efficiency changes ability use, so judge the listed bonus against your build’s needs.

Slot and compatibility

This is a standard Warframe mod with Naramon polarity and base drain 4. It is incompatible with Flawed Streamline, so the two cannot be equipped together. Flawed Streamline offers up to +12% Ability Efficiency with base drain 2; it is an alternative when that smaller bonus and lower drain suit your setup better.

Rank investment

The listed example fusion transitions are rank 0 to 1 for 30 Endo and 1,449 Credits, rank 2 to 3 for 120 Endo and 5,796 Credits, and rank 4 to 5 for 480 Endo and 23,184 Credits. These are three example transitions, not a complete cost breakdown. The rank 4-to-5 step is a larger listed investment, so weigh it against the value of reaching the maximum +30% bonus and the drain your build can accommodate.

Choosing among other mods

Adaptation has a different purpose: it gains resistance to a damage type after you take damage, stacking up to 90% for 20 seconds. Adept Surge is a Conclave Exilus mod that lists +10% Mobility and −25 Health. Neither is described as granting Ability Efficiency, so these candidates do not provide the same listed effect as Streamline.

Limitations and tradeoffs

• Base drain is 4, so account for the capacity cost in the build.
• The listed rank 4-to-5 example costs 480 Endo and 23,184 Credits.
• Flawed Streamline cannot be equipped alongside Streamline.