Voltaic Key [Urza's Saga]

Voltaic Key [Urza's Saga]Set: Urza's Saga Type: Artifact Uncommon Cost: {1} {1}, {T}: Untap target artifact. The key did not work on a single lock, yet it opened many doors.

put this card into your hand as it resolves

"We have been patient

Set: Portal Second Age Type: Creature — Bear Rarity: Rare Cost: {2}{G}{G} Whenever Razorclaw Bear becomes blocked

sparing not a single device

Set: Judge Gift Cards 2009 Type: Land Rarity: Rare {T}

Set: Portal Three Kingdoms Type: Creature — Ox Uncommon Cost: {3}{G} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

Set: Ixalan Prerelease Promos Type: Legendary Planeswalker — Vraska Rarity: Mythic Cost: {4}{B}{G} +2: Create a 2/2 black Pirate creature token with menace

" —Cao Cao

If there are no mining counters on Gemstone Mine

This ability has the indicated effect

Target player reveals their hand and discards all cards with that name

That land is a Swamp for as long as it has a mire counter on it