That's not how the spell works, AusarViled - The spell when properly implemented allows the duplicate to be the origin point of spells that you cast, functionally casting your spells from it - it doesn't give you extra casts of anything or allow you to cast more often in a turn (you are still the one casting the spell, using your action and your spell slots). The functionality of the actual spell as it exits in the ruleset is all folks are asking for.
Supposedly the training dummy icons we have are place-holders, but they've been that way since the spells were implemented, and there's been no sight yet of actual changes.