The life tree wanted green top-level gemstones. Abel just noticed that after the fair trade, he had last time. Of course, he didn't know about that before, but it was becoming more evident now. As he took two steps forward, he placed his hand on the bark and activated his soulspeaker's ability.
Abel made his intentions, "I've come to trade today, tree of life. This big druid has already fulfilled the requirement for promotion. Please help him as he's not been making much progress at all."