Haunting Echoes [Odyssey] Rocket's Secret Machine where X is 2 plus

where X is 2 plus the sacrificed creature's mana value

Set: World Championship Decks 2001 Type: Artifact Rarity: Rare Cost: {2} When Tsabo's Web enters the battlefield

You gain 1 life for each other creature you control

Set: Core Set 2020 Prerelease Promos Type: Creature — Human Rogue Rarity: Rare Cost: {5}{U}{U} When Agent of Treachery enters the battlefield

when you boost a card

Haunting Echoes [Odyssey] Rocket's Secret Machine where X is 2 plusSet: 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.