Exploration [Urza's Saga] Junior Super Series (They can't be blocked except

(They can't be blocked except by artifact creatures and/or black creatures

If it's a land card

Set: Worldwake Prerelease Promos Type: Instant Rarity: Mythic Cost: {X}{R}{R} Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell

Set: Magic 2014 Type: Instant Rarity: Rare Cost: {W} Your opponents can't cast spells this turn

defending player exiles the top twenty cards of their library

Exploration [Urza's Saga] Junior Super Series (They can't be blocked exceptSet: Urza's Saga Type: Enchantment Rarity: Rare Cost: {G} You may play an additional land on each of your turns. The first explorers found Argoth a storehouse of natural wealthtowering forests grown over rich veins of ore.