Card name: Displacement Wave
Mana Cost: CMCXColor UColor U
Converted Mana Cost: 2
Types: Sorcery
Card Text: Return all nonland permanents with converted mana cost X or less to their owners' hands.
Flavor Text: The sea respects no boundaries, least of all the coast.
Expansion: ORIR Origins
Rarity: Rare

Displacement Wave
Card rulings (?)
2015-06-22 If a permanent has an {X} in its mana cost, that X is 0.
2015-06-22 A token has converted mana cost 0 unless it's a copy of something else, in which case it has the mana cost of whatever it's copying.