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Id also be curious to see what the combination would be for your moms deck, if you want to find us on Twitter to let me know
When it enters, you get a 2/2 Robot for each multicolored permanent you control, and once it's stationed up to 12 counters, it becomes a 7/15 flier that draws cards every time it attacks
Permanents that arent on the battlefield are either permanent cards or permanent spells. Banishing Light cant target cards in graveyards because theyre permanent cards, not permanents on the battlefield
With the right combination you can loop Core Prowler with Reveillark, Karmic Guide, and a sac outlet, netting plenty of proliferation after the initial infection