Its definitely not an easy thing to do, but if you know the right people or have a good relationship with your local game store, buying at wholesale is definitely a possibility
If you pick up these decks and are looking to upgrade them, the mana bases are an excellent place to start though these are perfectly serviceable out of the box
Once you hit 14 cards in the yard, it transforms into Hades, Sorcerer of Eld, which lets you play from the graveyard
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Lingering Souls: "Flashback [cost]" means "You may cast this card from your graveyard by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack." (2021-03-19) You must still follow any timing restrictions and permissions, including those based on the card's type
Plus randomly being a 6/5 indestructible creature ain't bad
They really want to make her shine