This is a cheaper version of my All Purpose Endgame Variant 1 [Saryn] build (more customizable and better build linked at bottom)

Gameplay mostly consists of spamming spores, only use other abilities if energy is plentiful or at max
([Corrosive Projection] can be dropped for energy siphon if you are not getting any pickups depending on how you are using this build)

Personal Customization Notes:

• Arcane Grace can be dropped for any other arcane based on your weapon loadout or preference
• Augur reach can be dropped for Augur Message/Secrets (Duration/Strength/ respectively) based on what you prefer over extra range
• Because of dual umbra mods you will need to have at least one mod 1 rank from max, or have continuity 2 ranks from max (the latter is recommended)
• Primed continuity can be maxed if you use a umbra forma instead of a Naramon or Madurai polarity

Work in progress:

• experimenting with helminths

Upgraded build with a Umbra forma here