Scroll Rack, : Exile any number of cards from your hand face down. Put that many cards from the top of your library into your hand. Then look at the exiled cards and put them on top of your library in any order.

Soul Aflame and it's legendary in addition to its other types

It's still a land

Flying : Add one mana of any color

At the beginning of your next main phase

draw four cards

Artifacts you control have indestructible

Whenever this creature deals combat damage to a player

Sacrifice this land: Put your commander into your hand from the command zone

where X is the number of descent counters on Descent into Avernus

then discard a card

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost

If you control a commander as you cast this spell