This is a proof of concept version that tries to take advantage of the "nerf" (see 1st post).
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Since the Singularity no longer leaves your field, it becomes possible to Beguile+Regrade it multiple times, creating a faster clock at the cost of having to get rid of your Singu somehow.
Unsummoning your Singu not only solves the problem, but also gives you a Singu in hand that you can replay once you draw the Beguile+Regrade+Unsummon combo again.
Main issue I can see is you no longer have enough
quanta for Quintessence, so some other way to protect the opponent's Singus is needed. Maybe Plate Armor.