Ellie and Alan, Paleontologists (Borderless) Aetherdrift untap all creatures that attacked

untap all creatures that attacked this turn

This spell costs {1} less to cast for each permanent sacrificed this way

indestructible

The escape cost is equal to the card’s mana cost plus exile three other cards from your graveyard

you may discard a card

Ellie and Alan, Paleontologists (Borderless) Aetherdrift untap all creatures that attacked{T}, Exile a creature card from your graveyard: Discover X, where X is the mana value of the exiled card. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with that mana value or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)