Corruption of Towashi - March of the Machine

When Corruption of Towashi enters, incubate 4. (Create an Incubator token with four +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

Whenever a permanent you control transforms or a permanent you control enters transformed, you may draw a card. Do this only once each turn.