Your Strength score increases by 2, and your constitution score increases by 2.

Dragon slayers are just humans who learned dragon slayer magic so they live the same as regular humans.

Dragon slayers tend to go and fight strong opponents including dragons but still follow the law though break it if need be.

Tortle adults stand 5 to 6 feet tall and average 450 pounds. Their shells account for roughly one-third of their weight. Your size is Medium.

Your base walking speed is 40 feet.

Your fist are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage equal to 1d4 + your Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.

You have better hearing and smelling then even most animals.

When you eat a non-magical fire you regain 2d6 health and when you eat a magical fire attack you regain whatever the damage would have been. You use this ability as a reaction when attacked by a fire spell or outside combat whenever.

You are immune to any kind of fire damage magical or not do to your dragon slayer magic.

When you make a spell attack against a dragon you have advantage and do an extra 2d10. 

You can speak, read, and write Draconic and Common.