[Snake]

This has been in my mind for a while, so let me dish it out here.

The updated Scharfe will have a 6 round cooldown.

Scharfe
Focus your mind and energy, gathering momentum for a deadly blow.

Can only be used with 4 or more Schwarz Sturm.
Increases your Schwarz Sturm by 1 + X (based on Rank, ignores the limit of Schwarz Sturm for this instance, the damage multiplier cannot go beyond your Schwarz Sturm rank.)
If you use any Boxer skill while this skill is active, it will use up all of your Schwarz Sturm as if they are a Finisher (Finisher skills cannot be used while under Scharfe.), resetting it to 0, but you won't be able to obtain Schwarz Sturm for X rounds. (Based on Rank)

Rank 1: 20 FP, Extra Schwarz Sturm: +1
Rank 2: 25 FP, Extra Schwarz Sturm: +2
Rank 3: 30 FP, Extra Schwarz Sturm: +3

So you can use it on, let's say, Regenshauer, and it becomes a 'finisher' that hits people 12 times and then drains your Schwarz Sturm to 0. Or Sturm Shreik for an improved chance to inflict silence in exchange of zeroing your gauge too.