Sort:  

Yes, they are not available in modern now, and wild is not a free option, so it is better to burn those cards for the glint and buy new ones. But if you decide to play with wild, then it is a paid option.

Suggest me if wild or modern is good. I have played modern only and never played wild so have no idea about wild.
Thanks for the tip!

For the old player who owns a good collection of old cards, Wild is best for the new player, Modern could be a good option.