Timestream Navigator [Rivals of Ixalan Prerelease Promos] Shadows over Innistrad Prerelease Promos you can and must attack

you can and must attack all monsters on your opponent's side of the field once each with this card

Change 1 "Elemental Hero Bubbleman" in face-up Attack Position on your side of the field and 1 monster in face-up Attack Position on your opponent''s side of the field to Defense Position

or triggered ability

Special Summon 1 LIGHT Dragon-Type Synchro Monster from your Extra Deck in Defense Position

Set: Alpha Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {G} Enchant creature

Timestream Navigator [Rivals of Ixalan Prerelease Promos] Shadows over Innistrad Prerelease Promos you can and must attackSet: 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.