Exploration [Urza's Saga] Junior Super Series defending player exiles the top

defending player exiles the top twenty cards of their library

the Mutable becomes a Human with base power and toughness 1/1

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

Set: Urza's Saga Type: Sorcery Rarity: Rare Cost: {R} Search your library for a card

sacrifice Dragon Whelp at the beginning of the next end step

Exploration [Urza's Saga] Junior Super Series defending player exiles the topSet: 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.