Wow...
A gravity shield and he can't touch you. Like, he seriously won't do any damage.
he does have 4 momentums, but 4 shards can easily outheal the damage.
after the 1.23 (or 1.22) patch, osiris became so much smarter. even though false gods are supposed to draw 2 cards per turn, he only draws one when he's almost out of cards.
also, he sometimes uses rewind on his own monsters to lengthen his turn.
the smartest thing i saw was that after the board is full, his scarabs start eating some of the 9+ pharaohs and later even scarabs. O_O
but still he's a piece of cake if u have the right shield.