Oracle

Enchantment - Aura 

Enchant creature
Whenever enchanted creature deals damage to an opponent, you may draw a card.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

9/22/2011
“You” refers to the controller of Curiosity, which may be different from the controller of the enchanted creature. “An opponent” refers to an opponent of Curiosity’s controller.

9/22/2011
Any damage dealt by the enchanted creature to an opponent will cause Curiosity to trigger, not just combat damage.

9/22/2011
Curiosity doesn’t trigger if the enchanted creature deals damage to a planeswalker controlled by an opponent.

3/16/2018
You draw one card each time the enchanted creature deals damage to an opponent, no matter how much damage it deals or whether it was dealt in combat.

3/16/2018
If this Aura enchants an opponent’s creature, you won’t draw a card when that creature damages you. The creature has to deal damage to one of your opponents for the ability to trigger.

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