Power Drift

What does it provide?

At rank 0, Power Drift grants +2.5% Ability Strength and 5% chance to resist knockdown. At rank 3 those values are +10% and 20%; at rank 5 they reach +15% and 30%. These are two separate benefits. The knockdown effect is a chance, not immunity.

Where does it fit?

It is a Warframe Exilus mod with Zenurik polarity and base drain 4. Fortitude also provides knockdown resistance but is a standard-slot mod and pairs that resistance with shield recharge rather than Ability Strength. Sure Footed and Primed Sure Footed are Exilus alternatives focused on knockdown resistance, with the comparison descriptions listing 60% and 100% respectively; they do not list Power Drift's Strength bonus.

How far should you rank it?

The listed benefits increase at each example rank, reaching their maximum at rank 5. The examples give costs of 30 Endo and 1,449 Credits for rank 0 to 1, 120 Endo and 5,796 Credits for rank 2 to 3, and 480 Endo and 23,184 Credits for rank 4 to 5. Early ranks may be a sensible stopping point when their smaller Strength and resistance values already serve the build; max rank requires a much larger final investment.

What should you not assume?

The knockdown benefit is only a 30% chance at maximum rank, so it does not guarantee resistance on every hit. Power Drift occupies an Exilus slot, which should be planned separately from standard Warframe slots. Its +15% Strength is the listed mod bonus, not a calculation of final ability effects.

Limitations and tradeoffs

• The Exilus slot combines Strength and knockdown resistance, but the resistance remains probabilistic.
• The highest listed bonuses require rank 5 and substantially more Endo and Credits than early ranks.