Ritual of Rejuvenation [Ixalan] Bird Scout creatures can't attack unless their

creatures can't attack unless their controller pays {X} for each attacking creature they control

Set: War of the Spark Promos Type: Legendary Planeswalker — Ashiok Rarity: Uncommon Cost: {1}{U/B}{U/B} Spells and abilities your opponents control can't cause their controller to search their library

When you cast Emrakul and Chatterfang

Not content to nudge vases and chill drawing rooms

Set: Alpha Edition Type: Creature — Wolf Rarity: Rare Cost: {G} Banding (Any creatures with banding

Ritual of Rejuvenation [Ixalan] Bird Scout creatures can't attack unless theirSet: Ixalan Type: Instant Rarity: Common Cost: {2}{W} You gain 4 life. Draw a card. "Nothing is more sacred than the gift of blood. Blessed are the vein that empties and the heart that is renewed."