Timestream Navigator [Rivals of Ixalan Prerelease Promos] Standard where X is 2 plus

where X is 2 plus the sacrificed creature's mana value

Set: Champions of Kamigawa Type: Enchantment Rarity: Rare Cost: {2}{G} Whenever a player taps a land for mana

Set: Stronghold Type: Legendary Land Rarity: Rare {T}: Add {C}

Set: Beta Edition Type: Creature — Merfolk Rarity: Rare Cost: {U}{U} Other Merfolk get +1/+1 and have islandwalk

even at the expense of every other creature on Otaria

Timestream Navigator [Rivals of Ixalan Prerelease Promos] Standard where X is 2 plusSet: 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.