Gaiomon Control

The BT 8 MetalGreymon is a placeholder for the new EX 10 MetalGreymon.  It gives you opponents Digimon collision and forces them to attack.  When attack targets are changed, its inherit trashes the top card of your opponents security.  Pair that with the MetalGreymon Xs inherit and you trash two security from that alone while having protection and removal.  BlackWarGreymon Ace can blast evolve before the collision triggers when then lets you delete something while also getting

The BT 8 MetalGreymon is a placeholder for the new EX 10 MetalGreymon.  It gives you opponents Digimon collision and forces them to attack.  When attack targets are changed, its inherit trashes the top card of your opponents security.  Pair that with the MetalGreymon Xs inherit and you trash two security from that alone while having protection and removal.  BlackWarGreymon Ace can blast evolve before the collision triggers when then lets you delete something while also getting massive.  It then blocks the collision attack.  Attack target has changed so you trash the top two cards of your opponents security.  Alternatively you can go into the EX4 Gaiomon to trash another security or delete something with a play cost of 13 or higher.  End of turn evolve into the promo for free.  Psuedo Blitz with it while also being able to force something to attack if needed.  If that attack gets redirected you trash another security using the Gaiomon.  It will reboot at your opponents start of main.  Now it can block the next collision attack which triggers the trash security from its inherits.  Now your opponent is in an extremely bad situation.  The rest of the deck is just cards that let you enable these abilities and gain more memory and find pieces.  Omnimon X and ProtoForm are optional if you have them.  They just add to the decks brutality and defensive capabilities respectively.