Triskelavus [Commander 2011] Eldritch Moon Promos forbidding entry to all who

forbidding entry to all who come with the heavy tread of hate

Set: Mirage Type: Creature — Dragon Rarity: Rare Cost: {6}{R}{R}{R} Flying

return each creature your opponents control with toughness X or less to its owner's hand

If that player discards an artifact card this way

Triskelavus [Commander 2011] Eldritch Moon Promos forbidding entry to all whoSet: Commander 2011 Type: Artifact Creature Construct Rarity: Rare Cost: {7} Flying Triskelavus enters the battlefield with three +1 +1 counters on it. {1}, Remove a +1 +1 counter from Triskelavus: Create a 1 1 colorless Triskelavite artifact creature token with flying. It has "Sacrifice this creature: This creature deals 1 damage to any target."