Adarkar Valkyrie [The List] Spirit Wizard you may pay an amount

you may pay an amount of {E} equal to target nonland permanent's mana value

Reverse Type: Legendary Artifact If you would flip a coin

000 Type: Enchantment Rarity: Rare Cost: {5}{R} Whenever a creature enters the battlefield under your control

Set: The List Type: Creature — Human Spy Rarity: Rare Cost: {3}{U}{U} When Clocknapper enters the battlefield

and creature types

Adarkar Valkyrie [The List] Spirit Wizard you may pay an amountSet: The List Type: Snow Creature Angel Rarity: Rare Cost: {4}{W}{W} Flying, vigilance {T}: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control. She doesn't escort the dead to the afterlife, but instead raises them to fight and die again.