Another obscure Trojan War scene? I'm really have my head stuck in the plains of Ilium. This tale is only referenced in the Iliad, but made clearer in earlier epics of the Epic Cycle. If you love betrayal, you are going to love this.
Wait for me!
First a little bio on old Phil, he was the companion of Heracles (but wait he's not a satyr) and always accompanied the big oaf on a lot of his adventures. Now when Heracles was burning alive on his funeral pyre, (Don't ask) Phil inherited the enormous bow which had arrows tipped with the blood of the Hydra. Phil went on to become one of the many suitors of Helen and agreed with the pact to help the chosen suitor if anything should happen to Helen. Now he was a part of that famous 1,000 ship fleet and there were no problems, until they reached Lemnos that is.
Well this sucks
It seems that Hera (who was leading the Greeks to destroy Troy) was still upset with the fact that Phil helped Heracles, so when they landed on the island of Lemnos she sent a poisonous snake to bite Phil on the foot. Phil didn't die, but was in terrible agony and apparently started to make a stench. So rather than try to help their fellow comrade, the Greeks abandoned him and left him alone on that island till the very end of the war (which was ten years).
Oh crawling back to me now?
Well it seems the Greeks forget of that little prophecy that they could not take Troy without the bow of Heracles and where was that bow, on a island with a man who probably hates their guts for basically exiling him for ten years. Now they sent two heroes, Diomedes (the only man to wound the gods) and Neoptolemus (son of Achilles) to confront grumpy Phil. To their credit, they admit the mistake of abandoning him and promise that they would heal him. And so Phil came along and was cured of his snake bite and would go on to kill that little shit Paris.