Wall of Fire [Seventh Edition] Zombie Bird The amount you pay can't

The amount you pay can't be more than the total number of white nontoken permanents your opponents control plus the total number of white cards in their graveyards

Don't stray from the path

Set: Eventide Type: Creature — Shapeshifter Rarity: Common Cost: {1}{G/U} Whenever you cast a spell that's both green and blue

Set: Lorwyn Type: Basic Land — Forest Rarity: Common ({T}: Add {G}

Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card

Wall of Fire [Seventh Edition] Zombie Bird The amount you pay can'tSet: Seventh Edition Type: Creature Wall Rarity: Uncommon Cost: {1}{R}{R} Defender (This creature can't attack.) {R}: Wall of Fire gets +1 +0 until end of turn. The erupting flames work as both barrier and weapon.