Guh, alright I'll tell you haha. You have to do these in order! *note: make sure you get the stones that the enemies drop, as they are needed to get the fifth element*
#1 - Cast "thunder" on the biggest of the 2 cactai.
#2 - Cast "gravity" on the tent.
#3 - Cast "fire" on the rock sticking out on a cliff.
#4 - Cast "blizzard" on the three rocks that are in a triangle, starting with the smallest.
#5 - Cast "holy" on the flower that will appear after you've done the previous 4.(if you can't find it, go to where you begin the level, then walk up sticking to the left side and you will come to it)
Yup, hope that fixes your problems lol. On another note, after you get it, there's no need to change your chalice to anything else as the holy chalice will be able to take you through any miastream