MRC Alter-012 Mercurial Heart (Ultra Rare)

Card Name: Mercurial Heart
Card Number: 012
Card Type: REGALIA, ITEM
Rarity: Ultra Rare
Attribute: NORM
Types: GUARDIAN, ARTIFACT, POWERCELL
Memory Cost: 0
Reserve Cost: None
Level: 0
Life: 0
Speed: None

Description: Divine Relic (You can only have one card with this keyword in your material deck.)

On Enter: Put a buff counter on target Automaton ally you control.
Flavor Text: The first heartbeat began the downfall of Azoth.