Here's a non-Transform method that might work.
45 Colt 24 (6e heroic): RKA 1d6, Attack Versus Alternate Defense (Power Defense; All Or Nothing; +1/2), Transdimensional (Single Dimension (Time); Damage occurs 24 hours in the future; +1/2), Reduced Endurance (0 END; +1/2), Area Of Effect Accurate (4m Radius; +1/2), Does BODY (+1), Invisible Power Effects (Fully Invisible, effects of Power are Invisible to both target and other characters;[includes 'bleeding' damage until target is dead] +2) (90 Active Points); OAF (-1) - END=0
HM