World at War [Rise of the Eldrazi] Spirit you may search your library

you may search your library for a Spirit permanent card

(At the beginning of your upkeep

As long as Filth is in your graveyard and you control a Swamp

the forest is a part of the army

Exploit (When this creature enters the battlefield

World at War [Rise of the Eldrazi] Spirit you may search your librarySet: Rise of the Eldrazi Type: Sorcery Rarity: Rare Cost: {3}{R}{R} After the first postcombat main phase this turn, there's an additional combat phase followed by an additional main phase. At the beginning of that combat, untap all creatures that attacked this turn. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)