She buffs the team and enables you to constantly be gaining life, triggering your Resplendent Angel and Angelic Accord, and is just a very powerful body on her own as a 5/5 body with flying, first strike and lifelink
Most notably of them are Ultra Beast cards, since all of them has an ability that affects or be affected by Prize cards (though only several fulfills the Comeback part of this trope)
It's also a cool way to snag Journey Together packs with a fantastic promo card
All of them offer a pricey staple or two, and the Wolverine Secret Lair is far and away the best of them
If your main goal is to sell things and you arent collecting, you probably see this as a total positive, he says
And the last ability is a nice consolation prize for having your 8-mana play defeated (assuming it doesn't just get exiled by a Blot Out or something)