You've got more than Saturn and Mercury in the third house by the looks of things!
Four planets within five degrees is pretty impressive, and these energies--particularly the tight Uranus-Mercury-Sun conjunction in late Sagittarius--will probably function something like a super-planet since the energies are so fused together. Saturn's not too far behind, either.
You've also got Neptune and the Moon in Capricorn in the third house, although the Moon is within a degree of the Nadir and thus may be considered to be part of the fourth house.
I haven't seen such an extreme chart in a while, so I'll have to think about the meaning of all of these planets in the third house.
I find it interesting that you have a Libra Ascendant, and thus, the positions of the signs/houses of the natural zodiac are reversed.
Although the third house is a succedent house, none of the planets here have much accidental dignity. However, I've always thought of the planet Mercury as being rather comfortable in the third house, although Mercury is also in the sign of its detriment. I think the challenge of this chart is to reconcile these seemingly opposite, contradictory energies.
The Gemini/Sagittarius, 3rd house/9th house theme is HUGE in your chart, especially with Chiron opposing most of those planets in late Sagittarius.