The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Phyrexian Horse While most overworlders fortunately don't

While most overworlders fortunately don't realize this

and freak occurrences of sentience

you may return it to the battlefield face down under its owner's control

When Hoarding Broodlord enters the battlefield

” —Saruman

The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Phyrexian Horse While most overworlders fortunately don'tSet: 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.)