Not even sure why I choose these directions, but there you have it, artistic decisions are many times non-verbal and intuitive
This card allows you to build a knights deck with a focus on letting your own knights die and having ways of bringing them back, while also being able to destroy your opponents creatures or mill them away
Take any card you want, thats what
While there are a few creatures such as Sun Titan and Elesh Norn, Grand Cenobite that are more difficult to bring back with Ascend from Avernus, it has the upside of not reducing the power and toughness of every creature and makes it potentially profitable to leave Adeline herself in the graveyard to be reanimated without hindering her power and toughness and making her mostly useless
Yes, there was a Praetor Secret Lair thats no longer available
So, Battlefield Forge, Brushland, Llanowar Wastes and Underground River are on the way with new art