whoa that's sick! i love the snake concept!

glad you like it!

Hmmm...What happens if the snake looses it's head/the fight? Returns to the sword and makes it whole again, I assume, and it cannot be called for another day or so. Also, the snake returns into the sword in a short while as well, not sticks around for hours long of fighting, like in a war, I assume. It's a summoned beast companion /fighting aid for a few minutes long kind of thing.

It would be good if the summoned snake's type and fighting style would be random: It could produce a giant snake with a long and muscular body to deliver powerful strikes and constrict the opponent, but other times a fast moving poisonous bite delivering deadly striker, then a poison spitting ranged attacker, and maybe even a small swarm (like two dozens) of tiny snakes delivering small bites and small damage but still a great bother to deal with. The randomness of the snake type ensures that those who knew the weapon (traitor ally, ex-opponent) can't really have a 100% prepared counter-plan for the snake's appearance, just when it happened and have to deal with it. But the randomness of the summoned snake type is always the best for the situation, like a ranged poison spitting type for an opponent with wings/flying capability...