Blackflame VS Duelistwinner [Winner: Duelistwinner]

i go first...

draw...

i play field spell Zombie World.

Next i summon 7 Colored Fish (lv 4 1400 atk Normal), i play double summon to summon Plaugespreader Zombie (lv2 800 atk) and tune them to synchro summon, Doomkaiser Dragon in atk mode (lv 6 2400).

i play two facedowns and end my turn.

i draw i play heavy storm thenplace a face down and i summon stardust xiaolong and play double summon to summon speed warrior when he summon his atk doubles then i play creature swap so chose i chose stardust xiaolong

stardust xiaolong 100atk
speed warrior 1800atk

Doom.

ok now i got doom and you got stardust xaolong ok speed warrior attack stardust xaiolong and doom atack blackflame directly you lose
1700 from speed and 2400 from doom thats 4100 you lose

opp lp:0
mine:4000
cards in hand:1

locked