Evendo, Waking Haven reminds everyone of the pretty busted Gaea's Cradle, so the value justifies itself a bit
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
Theres room for improvement assuming theres a next time, but the ceiling of the designs was so high that I do hope there is one
Meanwhile, as a Lesson card, you should be able to have it in your hand during the most important parts of the game if you have the right Learn cards to fish it out of your sideboard
If it were any creature type other than Dragons, this may have caused riots, but the over-costed lizards needed it at the time
(Fact of Fiction End of Turn You Lose) - I run this way more than those dopey Ponder and Portents
