This is the true budget version. No Archfiend or Launcher, and all the extra deck monsters are cheap Blackwing monsters. Not competitive, but can easily OTK your opponent.
core
3x Mirage
3x Beetle
2x Necromancer
2x General
extra deck
3x Sohaya
1x Raikiri
1x Onimaru
skill : Infernity Inferno
For the rest cards of the deck just put some stall cards like Hallowed Life Barrier, Rainbow Life, Heat Wave, also put some backrow removal (Trunade, Cosmic Cyclone, or the very cheap Spiritualism).
Use Necromancer + Beetle to summon Sohaya. Use Sohaya + another Beetle to summon Raikiri. Banish General from GY to resummon Necromancer + Beetle to make another Sohaya. Use Raikiri's effect to get rid of opponent's monster. Then you can summon Onimaru using Raikiri + Sohaya, this Onimaru can increase its ATK to 6000 because it uses 2 BW Synchro as material. If you still have another General in GY, you can use it to summon your 3rd Sohaya, and this Sohaya can resummon Raikiri from GY.