Steam Vents [Return to Ravnica] Urza's At the beginning of combat

At the beginning of combat on your turn

You may look at and play that card for as long as it remains exiled

Set: Portal Three Kingdoms Type: Legendary Creature — Human Soldier Warrior Rarity: Rare Cost: {2}{B}{B} Horsemanship (This creature can't be blocked except by creatures with horsemanship

Set: Kaladesh Inventions Type: Artifact Creature — Thopter Rarity: Mythic Cost: {0} Flying

Set: Scars of Mirrodin Promos Type: Artifact Creature — Construct Rarity: Uncommon Cost: {0} Reminders of Memnarch's reign still skirr across Mirrodin

Steam Vents [Return to Ravnica] Urza's At the beginning of combatSet: Return to Ravnica Type: Land Island Mountain Rarity: Rare ({T}: Add {U} or {R}.) As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped. Crafted with genius, energized with madness.