User blog comment:Hunter Serge/Unofficial BFA Update 0.97.1/@comment-3515197-20160508175350/@comment-3974145-20160508220313

There is no evolve function in the Sim yet[if there will be]

For now you have to add cards into the evolved card manually. Though if you take a card with soul in it and press the "put into soul" button then the top card will go to the soul be the rest will be sent to the bottom of your drop zone. So you'll have to send the cards to the soul one at a time.