Besides spells with flashback, youll also find spells with the retrace, aftermath, and jumpstart mechanics, so you can get maximum value out of your graveyard
ET: Weve received a statement from The Pokmon Company International regarding this situation, which is reproduced in full below
Banish the remaining cards, face-down, and if you do, lose 1000 LP for each
We prioritize cheap casting cost over everything in order to maximize how much burn we can pump out: Vines of Vastwood and Goblin Bushwhacker are two of the best for being super cheap and having good utility, but we'll pay a bit extra for useful utility cards like Breath of Darigaaz and Inscription of Abundance
Magic: The Gathering Doctor Who Commander Decks Blast from the Past In 1963, the Doctor first appeared to audiences around the world
Devastation Tide will keep your opponents from developing their board while Revenge of the Hunted can help Ich-Tekik get in for big Commander damage