Lord of D prevents cards from targeting other dragons such as BEWD.
However, OTC isn't targeting the BEWD.
OTC targets your own monster.
You have to select/target 1 normal monster on your side!
When you successfully target & kill your own monster.
The resolve is to kill an opponents monster.
Ideally, You never target your opponents BEWD.
A resolve in a chain isn't a target.
Card is garbage and a noob trap in this game. The chances of you having Lord of D, a good dragon, is damn near impossible. Either I draw lord of D early on with no flute or the flute, D and no good dragon.
try using Yami Yugi skill Destiny Draw, or Sorcery Conduit (make sure to keep Lord of D. as the only spellcaster in the deck). pretty easy to succeed if you balance your deck right. it's even possible to get TWO good dragons, Lord of D., and a flute in the second/third turn.
i have now 2 lord of D i need 1 more how i can get it?
It's because Yomi ship's effect doesn't target your monster. It just destroys whatever battled with it. It only works if your opponent has to manually choose a target for one of their effects, like michizure or metalmorph.
Double check those levels. On my game, it shows Lord Of D. awarded at levels 10 & 21.