Blackbeard devil fruits

Blackbeard devil fruit | How does Blackbeard have 2 devil fruits?

After Marshall D. Teach become a Shickibukai, he started moving fast on his way to becoming the king of pirates. Blackbeard devil fruit (Darkness fruit) is one of the strongest in One Piece but it’s not enough so he takes the second one, but how does Blackbeard have 2 devil fruits? Teach now is a …