Timestream Navigator [Rivals of Ixalan Prerelease Promos] HGSS09 you can select and activate

you can select and activate 1 of the following effects:

Set: Strike of Neos Card type: Effect Monster Rarity: Ultra Rare Attack: 2500 Defense: 1800 When this card is discarded into Graveyard from hand by effect of opponent's card

and their monster's effects are negated

Set: Modern Horizons 2 Prerelease Promos Type: Sorcery Rarity: Rare Cost: {1}{B} Search your library for a nonlegendary card

it deals damage equal to its toughness to each other creature touched during the slide

Timestream Navigator [Rivals of Ixalan Prerelease Promos] HGSS09 you can select and activateSet: 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.