Just saying i'm not replacing these pokemon but I will replace them with a........
Time to get started!
EVs:HP365,Atk.248,Def.292,Sp.Atk.239,Sp.Def.339,and speed 257
Lugia.My #1 guy.Areoblast for STAB witch makes it a 200 power move.Hydro Pump due to strength of i and coverage of rock types.Sky Atatck for STAB and if my opponent sent his last pokemon out,this will kill 'em.Waterfall or little HP killer move and coverage of three types.
EVs:HP 331,Atk.335,Def.238,Sp.Atk339,Sp.Def.235,and speed 233.
Lustrous orb Palkia!That's uping his stats by a ton!Spacial Rend for STAB and dragon type coverage.Surf for STAB and for getting around by water, not o mention the great ammout of PP it has for a 95 power move.Thunder for coverage and great power and PP.Fire Blast for coverage and strength.Don't see a fire move on a water type pokemon every day!
EVs:HP 353,Atk.407!,Def.273,Sp.Atk.233,Sp.Def.230, and speed, the #237.
Regigagas!I like to think of this guy of a huge tank!Crush Grip for the first move when battling,also has STAB.Fire Punch for type coverage and 100 accuracy.earthquake for type coverage and just always works on steel types(exept for Skyamory).Brick Break for type coverage and PP.
Rayquaza!Specially known to be my best pokemon!Outrage for coverage and PP,gave Rayquaza a PP Max for this move.Thunder for type coverage and sats help it very much.Overheat to kill those ice types that wound my Rayquaza badly.Draco Meteor I don't know why he has that.
EVs:Hp 370,Atk.271,Def.202,Sp.Atk,350,Sp.Def.182,and last put not least,speed,327.
Mewtwo with Me First.Words to live by.Me First is a wonderful moive that most pokemon don't have a chance to use.It's one of the best.Psystrike is STAB, and is a wonderful move for Mewtwo.Fire Blast and Thunder for coverage.
Giratina!Shadow Force for STAB.Thunder and earthquake for type coverage.Fly beacause every trainer needs a pokemon that can Fly!
Well,that's it!Commenting or answering is appreciated and Answering is upvoted!