Heartstone [Stronghold] Condition:Heavily Played Its hooves touch the earth

Its hooves touch the earth only when a hero must rise

For the realm

Set: Mirrodin Type: Artifact Rarity: Rare Cost: {7} At the beginning of your precombat main phase

Set: Modern Masters 2017 Type: Creature — Devil Rarity: Rare Cost: {2}{R}{R} Haste

As Steam Vents enters the battlefield

Heartstone [Stronghold] Condition:Heavily Played Its hooves touch the earthSet: Stronghold Type: Artifact Rarity: Uncommon Cost: {3} Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana. "Finding a true heartstone is even harder than finding a true heart." Hanna