Of course, because a dead camel is bigger than a horse, and moglia is weaker, it used to be the Seven Arms Sea at least, with a reward of 32000 Vamberi, much better than most pirates! However, moglia, as a "sacrificed child", looked down on the world government! With this premise, let's think about why Blackbeard didn't kill him. On the contrary, he intends to recruit him into the league, so you can know that it is not simply because of his strength!
Let's go back to Comic 920. At that time, Blackbeard was having a big party and was in a good mood! Among pirates, banquets are extremely important, and killing people for fun on the way is not allowed! Not to mention red hair and Luffy, and so is the great god Bucky. One minute he's fighting with you, and the next he's laughing.
When we go to every banquet, we can find that this is the most important optimism in One Piece, regardless of decent villains! So when Blackbeard didn't kill him, he was probably in a happy state at the party. Whether he is an enemy or a friend, he will invite him. This is the first factor!
There is also the revolutionary army fighting the navy at this time, which is most in line with Blackbeard's mind! At the beginning, at the height of the war, he wanted to take the opportunity to end Naval Headquarters, but the red hair stopped him; Later, he went to attack the headquarters of the revolutionary army and failed. So this time the two sides fought, of course he was very happy. Maybe he's already thinking about something: when the revolutionary army and the navy lose, he'll take advantage of the fire to rob! So this is an era that needs fighting power, and moglia just sent it to you. It's a pity to kill him. Why not include him? ! Zombies in Moria can also act as a force, which is the second factor!
As for moglia's "Shadow Fruit", Blackbeard didn't intend to take it at all!
Although Blackbeard is a well-known "capable hunter", he must choose the fruit he hunts according to his suitability. Although "transparent fruit" is not a good fruit, it is excellent for sneak attack, similar to black beard regiment, so it has entered the hunting list, at least the prey likes this fruit very much! Moriah himself said to Absalom, "Many people covet your ability!"
And moglia's "shadow fruit" is to put a bunch of zombie attacks and then watch the fire from the other side, which belongs to the type of watching the fire from the other side! This is basically inconsistent with all the members of the Black Beard Pirates! Moreover, the fruit has an adaptation period. After the members of Blackbeard Group seize it, they will develop it. Instead, choose a ready-made one!