Old Black, a clone of the King of Black Phosphorus, has impressive combat abilities and can summon the King of Black Phosphorus to aid in battle at any time and place, essentially a walking nuke, ready to explode whenever desired.
Lind, or rather Lind Armand himself, used the power of being the master of the story to fabricate an Undead identity for himself, which wouldn't be exposed as long as he didn't add friends.
When the Undead were leaving the Magic Land in droves, he also urgently initiated the response plan for the new version.
He knew better than anyone that the "Black Knight Uprising" was a fake 2.0 version, and that the "Ring Knight Conflict" was the real 2.0 version, so gathering as many allies as possible and securing more high-end combat power became one of Lind's goals.
There's nothing more suitable than Deities, killing and rebirthing them to quickly elevate to the battlefield.
