Wildfire [Portal Second Age] Mountain Plains If those permanents are exchanged

If those permanents are exchanged this way

Set: Portal Three Kingdoms Type: Sorcery Rarity: Uncommon Cost: {2}{B} Creatures you control get +2/+0 until end of turn

Set: Shadows over Innistrad Prerelease Promos Type: Sorcery Rarity: Mythic Cost: {4}{G}{G} Return any number of cards with different mana values from your graveyard to your hand

Campus pranksters initiate new students with the old "beeble bomb" routine

Set: Commander 2014 Type: Legendary Creature — Elf Warrior Rarity: Rare Cost: {1}{G}{G} {G}: Regenerate another target Elf

Wildfire [Portal Second Age] Mountain Plains If those permanents are exchangedSet: Portal Second Age Type: Sorcery Rarity: Rare Cost: {4}{R}{R} Each player sacrifices four lands. Wildfire deals 4 damage to each creature.