Sarda is in fact the "wizard who did it" and is responsible for any and all weird/unexplainable things that go on in the 8-Bit world. He also mentions that his power is unlimited, retcons Fighter's death and causes several hundred years to pass in a moment (note that he doesn't age in the slightest):
Sure Deadpool can break the 4th wall but Sarda can actually effect the 4th wall (he also either freezes time or moves at incredible speed in this instance):
Here Sarda goes to the begining of time under his own power (he's quite young at the time). Among a few other thing he survives the BigBand without being phased in the slightest:
Here Sarda "saves" the LightWarriors and them messes with them for a bit even going so far as to damage them on a molecular level. Sarda also mentions that he can just will a change in the nature of teleportation spells.:
To put this feat into context BlackMage recieved an upgrade from the forces of evil that allows him to use BlueMagic in order to absorb any spell he survies being hit with. Piror to his upgrade BM was powerful enough to conquer Hell in a matter of hours.
Here Sarda sends BM to the city of Hurt, Australia.
However Australia is currently in orbit thanks to Sarda.
He then lets if fall on BM and WhiteMage.
Oh yeah and he makes some candy too!