The point of this build is to have the biggest buffs.
for the low low price of a little bit of starting health you can greatly help out your teamates by getting even more power. The umbral build is inferior due to the group benefit you gain from stronger buffs.
Step 1: Drop simple buffs to make sure that everyone has really good buffs anyway
Step 2: Find an energy orb
Step 3: Proc growing power and drop your Vitality and then Speed and then if you so choose Shock.
Step 4: Never worry about it again.
You're free to repeat the steps to make more pods elsewhere or to just do whatever else, the 4 is obviously really strong with this build and the 3 is alright. The most fun comes from making this into a meme by using it while under the effects of void buff/nidus/equinox/pax bolt/arby buff/etc
At "maximum" circumstances, you can give your teammates and yourself 10,000+ health and 1,000+ HPS which is just.... really nice.