Curse of Predation

Mana cost: {2}{G}
Type: Enchantment — Aura Curse
Set: Commander 2013 #140 (uncommon)
Price: $0.27 USD

Enchant player
Whenever a creature attacks enchanted player, put a +1/+1 counter on it.

Curse of Predation has 4 printings, first in Commander 2013 (2013). EDHREC ranks it #14,657 among Commander cards. It appears most in Kros, Defense Contractor decks (312 on EDHREC). 4 public decks on TCG run it. It has 5 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Curse of Predation

Evasive Maneuvers - Commander 2013, led by Derevi, Empyrial Tactician
Evasive Maneuvers - Commander Anthology, led by Derevi, Empyrial Tactician
Nature of the Beast - Commander 2013, led by Marath, Will of the Wild
Power Hungry - Commander 2013, led by Prossh, Skyraider of Kher

Commanders that run Curse of Predation most

Deck counts from EDHREC.

Often played with Curse of Predation

Cards that show up in the same decks on EDHREC.

Rulings

2013-10-17: Curse is an enchantment type, not a creature type (or any other kind of subtype).
2013-10-17: The ability won’t trigger when a creature attacks a planeswalker controlled by the enchanted player.
2013-10-17: Each of the Curses can be attached to any player, including the player who cast the Curse.
2013-10-17: A Curse spell targets the player it will enchant like any other Aura spell, and a Curse stays on the battlefield like any other Aura. If the enchanted player gains protection from the Curse’s color (or any other characteristic the Curse has), the Curse will be put into its owner’s graveyard.
2013-10-17: The Curse subtype has no inherent rules meaning, but two cards in the Innistrad set (Bitterheart Witch and Witchbane Orb) refer to Curses.