Its wings shimmer with dreams absorbed from its enemies.

Dream Pillager

Flying
Whenever Dream Pillager deals combat damage to a player, exile that many cards from the top of your library. Until end of turn, you may cast spells from among those exiled cards.

Starter Commander Decks

Commander Legends: Battle for Baldur's Gate

Forgotten Realms Commander

Commander Anthology Volume II

Flying
Whenever Dream Pillager deals combat damage to a player, exile that many cards from the top of your library. Until end of turn, you may cast nonland cards exiled this way.

Legendary Cube Prize Pack

If you cast an instant or sorcery card this way, it will go to your graveyard after it resolves, fails to resolve, or is countered. It won't return to exile.

Any cards you don't cast will remain exiled.

Casting a card this way follows the normal rules for casting the card. You must pay its costs, and you must follow all applicable timing rules. For example, if one of the cards is a creature card, you can cast that card only during your main phase while the stack is empty.

Exiling all the cards from your library this way won't cause you to lose the game. You'll lose only if you attempt to draw a card from an empty library.