mtg mummy cards Festering Print each player discards a card. Imhotep, the Mummy - EDH

As long as you controlled it when you began your turn you can attack with it

That said, the once per turn restriction may end up being too big of a downside in more competitive games

She's a great 5-drop and plays well into card flow and into shells like Orzhov tokens and various Aristocrat builds that seek to self-sacrifice a lot

You'll want to rely on some alternate forms of acceleration, primarily mana rocks like Talisman of Indulgence

Whether its a classic 2-card Kiki-Jiki, Mirror Breaker combo or a Rube Goldberg contraption featuring four or five moving parts, its easy to feel like a combo that ends the game on the spot invalidates all player actions that came before it