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You need to find the file GameMechanics\Creature\Creatures\Haven\Angel.xdb
in it, there is a line/tag Visual
{Visual href="/GameMechanics/CreatureVisual/Creatures/Haven/Archer.xdb#xpointer(/CreatureVisual)"/}
replace it with
{Visual href="/GameMechanics/CreatureVisual/Creatures/Neutrals/Death_Knight.xdb#xpointer(/CreatureVisual)"/}
in the files, there should be Less than < and Greater than > signs, i.e., not curly braces { }, the forum just processes them according to web design rules...
as a result, the angel will be displayed with the Death Knight model...
but the question is, why is this needed?! What is the final goal of such a replacement?!
Yes, I figured everything out overnight and even more than I wanted to))
In fact, just to understand the process, to figure it out, you need to start from scratch, but a new problem has emerged, the icons are displayed with a white background for some reason, and you can see the lines I drew with the mouse behind them. Maybe you know what the problem is?