Son of Death and son of Life

Former hit by Time Lord's scythe

Griffin trio assist the two

To make the potion ocean blue

Weapon in snake speaker's throne

Keeping Half-Bloods from their home

Blood of Death and Blood of Life

Clockwise once and counter thrice

Smelted blade of Time poured in

Pour potion as time begins

Portus when the clock strikes nine

Brings the two back to their time

So... I guess mull that over for the weekend. Put your predictions in the comments, I would love to see your ideas!