If Saw creates 2 *-power Goyfs, then Saw + Pyrogoyf is very good (4 triggers for * damage). Double Barrowgoyf is also good.
Saw + Caves of Chaos seems strong (+2 Initiative).
Saw + Broadside gives two haste attacking 1/1 menace, and even if blocked, you can sacrifice before damage. But you can't sacrifice both to each other. You could sacrifice one for 5 damage.
Saw + Slasher: 2 1/2 tokens + stunned Slasher. They don't have menace though (or haste). If you saw in response to removal, you get more bodies, but they can't attack yet. Not quite 10 damage each. The triggers happen in order, not at the same time: combat damage 1+1=2 (18 life), 1st trigger -9 (9 life), 2nd trigger -5 (4 life). Still a lot of damage!
Losing Grief hurts, because it was the #1 disruption. With no disruption you're wide open to Force of Will/Daze on Saw or Fatal Push/Swords to Plowshares/bounce on creature in response to Saw. I'd cut the flex cards (Reanimate, Jeskai) for maindeck 4 Thoughtseize.
Then there's the issue of card selection. Actually drawing Saw, not flooding out on fast mana. Try 4 Fable of the Mirror-Breaker (maybe over Nethergoyfs). It helps smooth out the cards drawn, adds Enchantment type, fixes mana, then Kiki also does similar combos with all these creatures.