ok you need future fusion , 3 white dragon stones , red wyvern ,red darkness metal dragon , 2 polymerization ,3 blue eyes , dragons mirror and a black luster soldier, royal decree and horus lv8 help if on field So you use future fusion to get rid of the stones and the red eyeses then fuse the blue eyes then the ultimate with luster and then dragons mirror to get another master knight

That would definitely hurt your opponent.

Too many cards you need, also really hard to do and not really a combo. Its just a really good hand.

not realy because if u didnt have the stones you wouldnt get the blue eyes and so on and you only need 3-4 cards depending if u run dragon master knight it works all the time my deck has 3 gold sarcophaguses to get the future fusion because its my game winning move

MUCH easier like this. Required hand: King of the Swamp, 1 more Fusion substitute (any), Black Luster Soldier, Dragon's Mirror

Discard King of the Swamp, get Polymerization.
Activate Poly to fuse BLS and the other substitute. Summon Dragon Master Knight.
Activate Dragon's Mirror, removing BLS and a substitute from grave. Summon another Dragon Master Knight.