cards that give flash mtg Aether - 7th Edition (You may cast this card from your graveyard for its flashback cost Flash in MTG - Rules,

In addition to these free spells, each Commander 2020 deck contains additional new commanders that can be used in place of the main general

Ogre Slumlord

Karmic Guide is an example of a great on-theme way to bring back any creatures you happen to lose, and you can include the Reveillark combo if you like to add a deterministic way to win

Of course, Snapcaster Mage isnt exactly the most creature-y creature to ever creature a creature

He doesn't do anything until we start killing opponent's creatures, so waiting until you can cast him and another spell is ideal, although not required

Recursion gives you a graveyard that works like a second hand, Imotekh turns that churn into a token army, and black mana backs it with removal and card draw