For a pure impact finisher I'd say do Mike Knox style flying crossbody, it's has the spear like feel.
That's actually not a half bad idea, i mean the Lariat appears to be the spear analogue, however I could totally see Reeves using this. It's way better than the top rope equivilent anyhow (Which Mark Henry is explicitly immune to, and yet people still try it on him).
(Survivor Series along with Ambrose and Reigns 18/11/12 )Seth Rollins Debuts At Raw/Smackdown or PPV
(Smackdown 07/09/12)Wade Barret comes back
(CM Punk vs The Rock Royal Rumble 27/01/13 )Punk loses Title
(WM XXX against Brock Lesnar)Taker's Streak over
(19/08/13 RAW)Randy Orton Turns Heel
(John Cena vs Brock Extreme Rules 29/4/12)Someone blades his head or busted wide open
(18/06/13 Payback won against Kaitlin)AJ wins divas title
(RAW 08/07/13) Bray Wyatt debuts on Raw/Smackdown
()John Cena Turns Heel
()Bray Wyatt wins WWE World Heavyweight Title
()Seth vs Ambrose vs Reigns Happens