Is DOB necessary for spll

1. No it is not.
2. Spells are not guaranteed to work.
3. You do not the amount of experience or knowledge of the seller.
4. You do not know if they will even perform the spell.
5. You do not know if the spell is real.
6. More stuff

Overall, a free spell is better than getting scammed or wasting your money. You could always learn to perform and create your own spell which would most likely be best.