Arcane Signet (227) (Surge Foil) [Warhammer 40,000] Insect Shade Whenever you cast a spell

Whenever you cast a spell with the chosen word in its rules text

Set: Innistrad: Crimson Vow Promos Type: Creature — Kraken Horror Rarity: Rare Cost: {5}{U}{U} Flash

When Simic Growth Chamber enters the battlefield

Set: The Brothers' War Retro Artifacts Type: Legendary Artifact — Equipment Rarity: Mythic Cost: {4} At the beginning of combat on your turn

Set: March of the Machine Commander Type: Instant Rarity: Rare Cost: {3}{U}{U} Counter target spell

Arcane Signet (227) (Surge Foil) [Warhammer 40,000] Insect Shade Whenever you cast a spellSet: Warhammer 40,000 Type: Artifact Rarity: Common Cost: {2} {T}: Add one mana of any color in your commander's color identity. Countless xenos cults dwell unseen within the Imperium, lurking just beneath the surface.