Antoinette Colbert, Historian

Flash
Artifacts you control have Improvise.
When this creature enters the battlefield, create a 0/1 colorless Assistant artifact creature token with flying. During your upkeep, create a 0/1 colorless Assistant artifact creature token with flying. If you use one or more Assistant tokens to Improvise when casting a spell, Investigate.
{2},{t}: Exile this creature from play. You can use this ability at instant speed. Return her to the battlefield at the beginning of the next phase.