Surge Engine [The Brothers' War]

Set: The Brothers' War Type: Artifact Creature — Construct Rarity: Mythic Cost: {2} Defender {U}: Surge Engine loses defender and gains “This creature can't be blocked.” {2}{U}: Surge Engine becomes blue and has base power and toughness 5/4. Activate only if Surge Engine doesn't have defender. {4}{U}{U}: Draw three cards. Activate only if Surge Engine is blue and only once.