Timestream Navigator [Rivals of Ixalan Prerelease Promos] Island Swamp you may search your library

you may search your library for a Forest card

Set: Legends Type: World Enchantment Rarity: Rare Cost: {3}{B} Whenever a player casts a spell

Set: Khans of Tarkir Prerelease Promos Type: Enchantment Rarity: Rare Cost: {U}{R}{W} Whenever you cast a noncreature spell

Set: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {4}{W}{W} Destroy all tapped creatures

What doesn't grow

Timestream Navigator [Rivals of Ixalan Prerelease Promos] Island Swamp you may search your librarySet: Rivals of Ixalan Prerelease Promos Type: Creature Human Pirate Wizard Rarity: Mythic Cost: {1}{U} Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) {2}{U}{U}, {T}, Put Timestream Navigator on the bottom of its owner's library: Take an extra turn after this one. Activate only if you have the city's blessing.