Illicit Auction [Mirage] Set Booster Set: Skyridge Type: Colorless Rarity:

Set: Skyridge Type: Colorless Rarity: Secret Rare Retreat cost: Colorless

Set: Fallout Type: Artifact — Equipment Rarity: Uncommon Cost: {2} Equipped creature has hexproof and haste

It is found here

The copy isn't legendary and has starting loyalty X

Illicit Auction [Mirage] Set Booster Set: Skyridge Type: Colorless Rarity:Set: Mirage Type: Sorcery Rarity: Rare Cost: {3}{R}{R} Each player may bid life for control of target creature. You start the bidding with a bid of 0. 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 and gains control of the creature. (This effect lasts indefinitely.)