Mages' Contest [Invasion] Arena League 2005 Sacrifice Ally Encampment: Return target

Sacrifice Ally Encampment: Return target Ally you control to its owner's hand

When Karrthus

Set: Magic 2011 Type: Artifact Creature — Construct Rarity: Rare Cost: {6} Triskelion enters the battlefield with three +1/+1 counters on it

counter target artifact spell you control that isn't the target of an ability from another creature named Goblin Artisans

Mages' Contest [Invasion] Arena League 2005 Sacrifice Ally Encampment: Return targetSet: Invasion Type: Instant Rarity: Rare Cost: {1}{R}{R} You and target spell's controller bid life. You start the bidding with a bid of 1. In turn order, each player may top the high bid. The bidding ends if the high bid stands. The high bidder loses life equal to the high bid. If you win the bidding, counter that spell.