Holocron

Sever Force

Force power · Level 3 · Universal
power-typeForcelevel3alignmentUniversalconcentration
Same as 5eYou already know this as 5e Counterspell — This is Counterspell with the serial numbers filed off — same level, same interrupt mechanic, same 10 + power level check, same upcast rule; just call it your Counterspell.
React to interrupt a force power being cast within 60 feet: auto-cancel 3rd level or lower, ability check for higher.
ControlDefense
○○breadth · Force-caster enemies only
TargetingSingle
Use whenan enemy Force caster begins a powerful force power
ScalingHigher slots auto-cancel force powers up to the slot level used.
!Only works against force powers, not tech powers; uses your reaction.
wardingcontrol-condition
Pairs withForce vs. Force combat · Force Suppression · a high forcecasting ability modifier for contested checks
PlaystyleController

You attempt to interrupt a creature in the process of casting a force power. If the creature is casting a power of 3rd level or lower, its power fails and has no effect. If it is casting a power of 4th level or higher, make an ability check using your forcecasting ability. The DC equals 10 + the power's level. On a success, the creature's power fails and has no effect.

Force Potency. When you cast this power using a force slot of 4th level or higher, the interrupted power has no effect if its level is less than or equal to the level of the force slot you used.

Codex
Casting Period
1 reaction, which you take when you see a creature within 60 feet of you casting a force power
Range
60 feet
Duration
Instantaneous
Concentration
No