After a few requests here it is finally. This one was odd to do since his jolly roger dosen't really resemble blackbeard in any way. Anyways tried to do his darkness effect to his jolly roger, hope it comes across well enough
uh I know there is a theory that he actually has a mystical zoan Cerberus hence the 3 heads and ability to get other devil fruits since he has 3 different hearts or something. But probably just it looks cool lol XD
Zoan theory is a complete bullshit. I'm honestly suprised it exitst since it can be dismissed by quotes from manga. Some people are really stupid.
However, the 3 heads on the flag are indeed the 3 heads of Cerberus and it's an ancient symbol of fate - one head looks into past, one into present and one into future. 4 bones on the background form a star of chaos symbol, so alltogether it reads as "chaotic fate".