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'{U}, Sacrifice this artifact: Return target creature to its owner's hand.
{1}, Sacrifice this artifact: Draw a card.
Vigilance Whenever you activate an exhaust ability, create a 1/1 colorless Thopter artifact creature token with flying. Crew 1 (Tap any number of creatures you control with total power 1...
Flying
When this creature enters, you get six {E} (energy counters).
Pay {E}{E}{E}{E}: Return this creature to its owner's hand.
'{U}, Sacrifice this artifact: Return target creature to its owner's hand.
{1}, Sacrifice this artifact: Draw a card.
'When this creature enters, you get {E}{E} (two energy counters).
Whenever this creature attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.
'Whenever this creature attacks, you get {E}{E} (two energy counters).
Pay {E}{E}: Exile this creature, then return it to the battlefield under its owner's control.
'Return target permanent you control and target permanent you don't control to their owners' hands.
'For each attacking creature, its owner puts it on their choice of the top or bottom of their library.
'When this creature enters, return target nonland permanent to its owner's hand. Evoke {1}{U}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it...
'When this creature enters, return target creature to its owner's hand.
'When this creature enters, you get an amount of {E} (energy counters) equal to the greatest power among creatures you control.
Pay {E}{E}{E}: Target creature blocks this turn if able.
'Return all attacking creatures to their owner's hand.