Almas

I personally think Elend would defeat Vivenna just based on his raw power. Nale's Gravitation is a pretty strong counter to Kelsier's Iron and Steel. I think Wax could destroy Plate fairly easily with his guns, steelpushes, and stored weight. He's also mobile enough to counter Eshonai's speed. If it came to that exact scenario I think if Elend could get the first defeat against Vivenna fast enough and team up against Wax, he and Eshonai could win that battle. I also think Nale, Eshonai, and Elend could defeat Kelsier together, but one or two would die. Now if Wax gets the first defeat against Eshonai and assists Vivenna. I believe it would go the other way. I also think Eshonai would defeat Vivenna fast if they swapped. Elend and Wax is hard it could go either way, but with an assist from Eshonai again Wax is done. I think Nale vs Kelsier alone is a long drawn out battle that could go either way and whoever gets help would win. Kelsier or Nale in a 1v1 with anyone else will easily win IMO. Assuming it's a messier fight with Kelsier multitasking, Nale lashing people upward, Vivenna getting time to find and set up objects to awaken. Every scenario could have a different outcome...

Theoretically could Harmony split his power in half, both halves with equal parts Preservation and Ruin, and assuming he found someone who fit the power, could he give them half? Effectively creating two piecemeal regular sized shards with the same intent? What could be the outcomes? I wonder if the two Harmonies would end up being symbiotic somehow. Acting together, peacefully, and cooperatively, but always in opposite ways.