You and target player exchange control of the creature you each control with the highest mana value. Then exchange control of artifacts the same way. If two or more permanents a player controls are tied for highest, their controller chooses one of them.
Lands you control are Plains.Nonland permanents you control are white. The same is true for spells you control and nonland cards you own that aren't on the battlefield.You may spend white mana as though it were mana of any color. You may spend other mana only as though it were colorless mana.
Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)Whenever enchanted creature deals damage, you gain that much life.
Each player sacrifices the creature they control with the highest mana value unless they pay that creature's mana cost. If two or more creatures a player controls are tied for highest, that player chooses one.
Players play with their hands revealed.If a player would draw a card, they reveal it instead. Then any other player may pay 2 life. If a player does, put that card into its owner's graveyard. Otherwise, that player draws a card.