Synch Blade

Synch Blade is an ability which allows a Keyblade wielder to summon another Keyblade during battle. So far, only Roxas is able to use this ability to summon his two Keyblades naturally, the Oblivion and the Oathkeeper in battle, and Sora while in Valor Form, Master Form, and Final Form.

Tetsuya Nomura stated that Roxas's ability to use two Keyblades implies that Sora can use Synch Blade without the Drive Forms, due to the fact that Roxas has every ability that Sora has. It's proved when Sora took Riku's Way to the Dawn at Xemnas' final battle.

to get 2 keyblades for normal sora you have to get all drive forms to level 7 AND you have to beat sephiroth. then go to queen minnie and talk to her. after do that you have to go to cornerstone hill. then you have to fight a boss, if its right. if it doesnt work you have to be anti-form 160 times. bey!