The Mightstone and Weakstone [The Brothers' War: Prerelease Promos] FPx2 You can only use this

You can only use this effect of "Ghost Ogre & Snow Rabbit" once per turn

At the end of your upkeep

Set: Limited Edition Beta Type: Creature — Elemental Rarity: Rare Cost: {2}{G}{G}{G}{G} Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking

Discard a Water Energy card and a Lightning Energy card attached to Dragonite ex

The Mightstone and Weakstone [The Brothers' War: Prerelease Promos] FPx2 You can only use thisSet: The Brothers' War: Prerelease Promos Type: Legendary Artifact Powerstone Rarity: Rare Cost: {5} When The Mightstone and Weakstone enters the battlefield, choose one Draw two cards. Target creature gets 5 5 until end of turn. {T}: Add {C}{C}. This mana can't be spent to cast nonartifact spells. (Melds with Urza, Lord Protector.)