Board Thread:Questions and Answers/@comment-188.63.184.161-20150113194102/@comment-25179062-20150114173229

I am not sure I understand your question. Which unit are you trying to evolve?

Most evolution materials can be obtained through Quests or through Vortex daily events which have better drop rates (Tuesday is nymphs, spirits, idols, and pots; Wednesday is various mimics; Thursday is various totems).

The evolution materials which can be obtained only through special events in the Vortex include various bulbs, also Cyclaw (required to evolve Ultor to 6*) and Hydraloid (required to evolve Tridon to 6*).