Superhuman Strength: Diana possesses far greater strength than the finest human athletes. She kept an A.R.G.U.S aircraft from crashing by holding it up. She dispatched numerous Parademons during Darkseid's invasion and broke the Fortress of Solitude's doors down when H'el locked Superman out and took control of it. She has also managed to briefly overpower both Green Lantern and Aquaman, as well as Supergirl. She managed to defeat the goddess Artemis, as well as draw blood from The First Born.
The storyline "The Circle" was focused on the revelation of a failed assassination attempt on Diana when she was a baby, by four rogue Amazons. These Amazons – Myrto, Charis, Philomela and Alkyone, collectively referred to as The Circle – were Hippolyta's personal guards and were extremely loyal and devoted to her. However, when Hippolyta decided to raise a daughter, The Circle was horrified and considered the baby ill-fate, one who would ruin their entire race. Thus, after Diana was sculpted out of clay and brought to life, The Circle decided to assassinate the baby. Their attempt was foiled however, and the four Amazons were imprisoned. After years, the Circle escaped their prisons with the help of Captain Nazi, and decided to accomplish their previously failed mission and kill Diana. Diana defeated Myrto, Charis, Philomela and then approached Alkyone, who runs off and succumbs to her death by falling into the ocean. The other three Amazons return to their prisons.
Who are the Dark Gods, and what is it they want? We don't actually see them in the issue; the only glimpse we have of them so far is on the cover. They look mighty and regal, and they certainly look dangerous. We don't yet know where exactly they come from, but the issue's advanced solicit description does confirm that they have arrived in the wake of Dark Nights: Metal, and that they are part of new secrets of the cosmos -- secrets that have just been unveiled. Already, we have seen that they are able to affect the minds of the masses, and turn them against their own kind. And this is only the start.