Lethal Scheme (Promo Pack) [Streets of New Capenna Commander Promos] S4 while the Truestone Seneschal can

while the Truestone Seneschal can wield a pair of stratum hammers

searching through various rooms (often behind barricaded doors)

immediately after this effect resolves

return that exiled card to the battlefield under its owner's control tapped with the noted number and kind of counters on it

Lethal Scheme (Promo Pack) [Streets of New Capenna Commander Promos] S4 while the Truestone Seneschal canSet: Streets of New Capenna Commander Promos Type: Instant Rarity: Rare Cost: {2}{B}{B} Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Destroy target creature or planeswalker. Each creature that convoked Lethal Scheme connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1 +1 counter on that creature.)