Is this a good deck? I think it unbeatable.?

My friend has beaten every yugi oh game with this deck. we have tried to play him in link duels/wifi and he is unstoppable. Good check his deck out and judge for ur self:

Effect:

skelengel x3

blast sphere x3

cyber jar

hiro's shadow scout

magician of faith x2

man-eater bug x3

morphin jar x3

morphin jar#2

needle worm x3

nimble momonga x3

sangan x2

witch of the black forest x2

spells /traps

call of the haunted

dian kieto x3

gravekeeper's servant x3

heavy storm

hapies feather duster

mirror force

monster reborn

numinous healer x3

pot ot greed

raigeki

premature burial

swords of revealing light

trap hole

upstart goblin x3