Giada also reads: Each other Angel you control enters the battlefield with an additional +1/+1 counter on it for each Angel you already control. This is an absurdly powerful ability and, while its definitely going to find a home in Commander, the low mana value means it could theoretically see play in any format you might find other angels
But it seems like there's also a clearly distinct variant of the deck that seeks to push the new crime mechanic as far as humanly possible
Whenever a nontoken Equipment you control enters, create a token that's a copy of it, except it has "This Equipment's equip abilities cost less to activate." Sacrifice that token at the beginning of the next upkeep
An Eternal Witness or Karmic Guide or Primeval Titan in those formats where its legal
In the end, youll get a bunch of dragons, and they all support each other via the +1/+1 lord bonus
Honestly, tons of Black decks use reanimation tactics, so finding a deck to play new Sidisi won't be hard at all