Foggy Swamp Visions (TLA 339)

Sorcery • Mana cost: {1}{B}{B} • Avatar: The Last Airbender • Rare

As an additional cost to cast this spell, waterbend {X}. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.)
Exile X target creature cards from graveyards. For each creature card exiled this way, create a token that's a copy of it. At the beginning of your next end step, sacrifice those tokens.

Illustrated by Sija Hong.