Cards like Blood Artist, Mayhem Devil, and Sephiroth, Fabled SOLDIER / Sephiroth, Fabled SOLDIER are excellent, cheap win conditions that can be paired with sacrifice enablers like Viscera Seer
Is this precon to die for, or rotten enough to shamble past
Polukranos Reborn, once transformed into Polukranos, Engine of Ruin, will make all your hydra non-token creatures die into two Hydra tokens
It's just -3, and it's incredibly easy to abuse on the third turn
The 7 life youll gain is a nice benefit to ensure you wont die before casting it again
Bladecoil Serpent Versatile, and extremely powerful (duh!) picking Bladecoil Serpent first is bound to impact the rest of your draft as you decide which of three colour pairs to go for - but it would be pretty good even if you were only getting one of its effects