Urza's Power Plant (Red Columns) [Antiquities] Magic Origins Whenever enchanted creature deals damage

Whenever enchanted creature deals damage to an opponent

you gain control of target opponent during that player's next turn

Set: Alpha Edition Type: Enchantment — Aura Rarity: Common Cost: {U}{U} Enchant land

I'd have told you what it was

Set: Alpha Edition Type: Instant Rarity: Common Cost: {X}{B} Target creature gets +X/+0 until end of turn

Urza's Power Plant (Red Columns) [Antiquities] Magic Origins Whenever enchanted creature deals damageSet: Antiquities Type: Land Urza's Power Plant Rarity: Uncommon {T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead. Artifact construction required immense resources.