Inventors' Fair [Kaladesh Promos] GR or when a Spell/Trap Card

or when a Spell/Trap Card that is already face-up on the field activates its effect: You can send this card from your hand or your side of the field to the Graveyard

inflict piercing battle damage

Set: Portal Second Age Type: Sorcery Rarity: Rare Cost: {X}{R} Earthquake deals X damage to each creature without flying and each player

Set: SM - Forbidden Light Type: Metal Rarity: Secret Rare Retreat cost: 3 [M] Overclock

If both of them are heads

Inventors' Fair [Kaladesh Promos] GR or when a Spell/Trap CardSet: Kaladesh Promos Type: Legendary Land Rarity: Rare Cost: At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life. {T}: Add {C}. {4}, {T}, Sacrifice Inventors' Fair: Search your library for an artifact card, reveal it, put it into your hand, then shuffle your library. Activate this ability only if you control three or more artifacts.