Clockwork Avian [Antiquities] San Diego Comic-Con 2014 Set: Duel Decks Anthology Type:

Set: Duel Decks Anthology Type: Sorcery Rarity: Common Cost: {2}{B} Target creature gets -3/-3 until end of turn

where X is the total power of the cards exiled this way

What could you possibly do to injure me

it deals damage equal to that permanent's converted mana cost to target creature

Clockwork Avian [Antiquities] San Diego Comic-Con 2014 Set: Duel Decks Anthology Type:Set: Antiquities Type: Artifact Creature Bird Rarity: Rare Cost: {5} Flying Clockwork Avian enters the battlefield with four +1 +0 counters on it. At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1 +0 counter from it. {X}, {T}: Put up to X +1 +0 counters on Clockwork Avian. This ability can't cause the total number of +1 +0 counters on Clockwork Avian to be greater than four. Activate this ability only during your upkeep.