Using purple hybrid techniques I've been working on since bt7, go from a tamer into Fenriloogamon Takemikazuchi in one turn. This deck is still a prototype tho, it has consistency issues.
digivolve eiji into loweemon, add x antibody to the stack, declare attack, use loweemon effect to digivolve into rhihimon, x antibody effect to digivolve into Fenriloogamon, playing Kazuchimon, then digivolve into Fenriloogamon Takemikazuchi.