2 hours ago, Magnus Arcanus said:I am not sure where you are finding this anywhere in the rules. You cannot spend three advantages to activate a 'temporary' critical hit, and effectively 'select' what that critical hit is. You can't even do this on an triumph.
"When dealing damage to a target, have the attack disable the opponent or one piece of gear rather than dealing wounds or strain. This could include hobbling him temporarily with a shot to the leg, or disabling his comlink. This should be agreed upon by the player and the GM, and the effects are up to the GM (although Table 6 - 10: Critical Injury Result is a good resource to consult for possible effects). The effects should be temporary and not too excessive."
From the table on spending Advantages and Triumphs in Force & Destiny.
So, yes. You can spend 3 Advantages to temporarily inflict something along the lines of a critical hit.