Timestream Navigator [Rivals of Ixalan Prerelease Promos] Soldier If you control an Urza's

If you control an Urza's Mine and an Urza's Power-Plant

Set: Commander 2014 Type: Artifact Rarity: Rare Cost: {2} Black spells you cast cost {1} less to cast

Set: Arabian Nights Type: Sorcery Rarity: Rare Cost: {W}{W} Players play a Magic subgame

Set: Khans of Tarkir Prerelease Promos Type: Instant Rarity: Rare Cost: {R}{W} The next time a source of your choice would deal damage to you this turn

Set: Unlimited Edition Type: Artifact Rarity: Rare Cost: {3} {1}: The next time an unblocked creature of your choice would deal combat damage to you this turn

Timestream Navigator [Rivals of Ixalan Prerelease Promos] Soldier If you control an Urza'sSet: 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.