Reverse Engineer [Commander Masters] Germ Whenever you cast a spell

Whenever you cast a spell during an opponent's turn

loses 3 life

Set: March of the Machine Commander Type: Plane — Dominaria Rarity: Common When you planeswalk to Riptide Island and at the beginning of your upkeep

Watchful Blisterzoa enters the battlefield with an oil counter on it

Set: EX: Emerald Type: Metal Rarity: Ultra Rare Retreat cost: Colorless

Reverse Engineer [Commander Masters] Germ Whenever you cast a spellSet: Commander Masters Type: Sorcery Rarity: Common Cost: {3}{U}{U} Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for 1.) Draw three cards. The Hold, an illegal research facility in a derelict merchant ship, became a wellspring of renegade intelligence.