Spara's Headquarters [Streets of New Capenna Prerelease Promos] Synth Knight Whenever you cast a spell

Whenever you cast a spell during an opponent's turn

Activate only during an opponent's turn

Sacrifice this creature: Counter target noncreature spell unless its controller pays {1}

then you may discard any number of land cards

"Test 37: Sentience module is still too strong

Spara's Headquarters [Streets of New Capenna Prerelease Promos] Synth Knight Whenever you cast a spellSet: Streets of New Capenna Prerelease Promos Type: Land Forest Plains Island Rarity: Rare ({T}: Add {G}, {W}, or {U}.) Spara's Headquarters enters the battlefield tapped. Cycling {3} ({3}, Discard this card: Draw a card.) To most, the Nido Sanctuary is an office complex. To the Brokers, it's a vault of secrets.