Haunting Echoes [Odyssey] Darksteel Remove a +1/+1 counter from

Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target

Set: Kaladesh Inventions Type: Artifact Creature — Construct Rarity: Mythic Cost: {4}{R}{R} First strike

Take an extra turn after this one if an opponent cast a blue spell this turn

Set: Fourth Edition Type: Enchantment Rarity: Rare Cost: {W} At the beginning of your upkeep

{0}: Sacrifice Knowledge Vault

Haunting Echoes [Odyssey] Darksteel Remove a +1/+1 counter fromSet: Odyssey Type: Sorcery Rarity: Rare Cost: {3}{B}{B} Exile all cards from target player's graveyard other than basic land cards. For each card exiled this way, search that player's library for all cards with the same name as that card and exile them. Then that player shuffles.