Heartstone [Stronghold]Set: 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

you may pay 2 life

if it had no -1/-1 counters on it

Set: EX: Delta Species Type: Fire

" (A player with ten or more poison counters loses the game

Set: Unlimited Edition Type: Basic Land — Plains Rarity: Common ({T}: Add {W}

Set: Gym Challenge Unlimited Type: Psychic Rarity: Common Retreat cost: Colorless

Set: Sword & Shield: Evolving Skies Type: Stadium Rarity: Secret Rare

Set: Expedition: Base Set Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Set: Black & White: Noble Victories Type: Fire Rarity: Rare Retreat cost: Colorless

Set: Sun & Moon: Base Set Type: Water Rarity: Promo Retreat cost: 2

Set: Sun & Moon: Cosmic Eclipse Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

As long as you have 30 or more life