Xira Arien [Legends] Human Rogue Set: Worldwake Type: Artifact Rarity:

Set: Worldwake Type: Artifact Rarity: Rare Cost: {1} Whenever a permanent enters the battlefield tapped and under your control

then return her to the battlefield transformed under her owner's control

If Mishra's War Machine deals damage to you this way

Set: Saviors of Kamigawa Type: Legendary Creature — Human Shaman Rarity: Rare Cost: {2}{G} Whenever you cast a legendary spell

Xira Arien [Legends] Human Rogue Set: Worldwake Type: Artifact Rarity:Set: Legends Type: Legendary Creature Insect Wizard Rarity: Rare Cost: {B}{R}{G} Flying {B}{R}{G}, {T}: Target player draws a card. A regular guest at the Royal Masquerade, Arien is the envy of the Court. She appears in a new costume every hour.