Wait, third affinity? (Si)
Yes, you currently have the two affinities of Death and Poison. This already makes you incredibly powerful as the Death affinity supports stealth and increases potency of already deadly attacks. While being venomous means you have had the Poison affinity since birth. This combination is extremely rare and powerful. Most of the hatchlings in your brood were just venomous snakes with a few of them having a Water affinity.
So what are the affinities? (Si)
Let me explain a bit before I show you. There are higher and lower affinities the higher affinities being more abstract or rare while also more powerful. While you can get a third affinity it isn't necessary for you to evolve into a magical beast as you already have two which is the minimum. You could instead get more focused energy of your already existing affinities. And so here are the affinities.
Lower Higher
Fire
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Water
Earth
Air
Poison
Lightning
Metal
Wood
Ice(Cold)
Infernal
Death
Dark
Space
Nature
Time
Light
Life
Celestial
Wow thats quite a lot ... is there anything else I need to know about the affinities? (Si)
Yes, you also need to know that some affinities have variants and that these are exponentially more powerful than their base affinities. But these only occur in magical beast.
Is there anything I need to know about this continent? (Si)
Just think of Avara as one giant, violent nursery. It is a lot smaller than the other continents and you won't find any magic beasts as they move to other continents to become stronger. Also if you decide at any time you want to lay some eggs you need to know that if you haven't evolved they will be born at Evolution 0 while if you evolve they will be at a the evolution before your current form for example your on your fourth evolution they be born at a third evolutionary stage. Also you can lay eggs with any kind of serpent as long as she is on the same evolutionary stage as you.