It was suggested that the other version needed more card draw, so I came back to EHG. Another unoptimized combo, you want to grab Prize Sow and Severin while Aymar is out to softlock and annoy the opponent.
Repel Darkness is not here as part of the combo, it's because people are more like to panic discard it with exploit. You can use it to ramp or save a combo piece, but the latter is not it's purpose here. Tons of card draw, a little bit of recursion to make sure you can grab both pieces. Remember that Severin will cost 5 with Aymar out, and the proper play order changes up here since Vinegrafter will make Sow a 2/2, so you can run Aymar out, then Sow, then Severin, for 5 power, then drop a power or kill a unit however you need to.