OracletextWhen this Case enters the battlefield, investigate. <em>(Create a Clue token. It's an artifact with "2, Sacrifice this artifact: Draw a card.")</em>
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To solve — You control three or more artifacts. <em>(If unsolved, solve at the beginning of your end step.)</em>
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Solved — 2U, Sacrifice this Case: Put four +1/+1 counters on target noncreature artifact. It becomes a 0/0 Bird creature with flying in addition to its other types.