Valakut, the Molten Pinnacle [Zendikar] Amonkhet Prerelease Promos you may reveal your hand

you may reveal your hand and put all land cards from it onto the battlefield

Set: Planeshift Type: Instant Rarity: Rare Cost: {W} Kicker {W} (You may pay an additional {W} as you cast this spell

Set: Dragons of Tarkir Type: Legendary Creature — Elder Dragon Mythic Cost: {4}{B}{R} Flying

—Elvish saying

Set: Legends Type: Creature — Horror Rare Cost: {3}{B} {T}

Valakut, the Molten Pinnacle [Zendikar] Amonkhet Prerelease Promos you may reveal your handSet: Zendikar Type: Land Rare Cost: Valakut, the Molten Pinnacle enters the battlefield tapped. Whenever a Mountain enters the battlefield under your control, if you control at least five other Mountains, you may have Valakut, the Molten Pinnacle deal 3 damage to any target. {T}: Add {R}.