This build is something of a jack of all trades build, but takes inspiration heavily from Moxsy's Amarageddon.
With the recent 7/23/2020 patch, many Amara builds seem to benifit heavily from (Channeling my inner Mr. Torgue) MORE EFFING EXPLOSIONS!!!! Rather than making a separate grasp, one punch, blinding explosions build, combine them together and do it all!
Play style: For mobbing, just use a radiation complex root with splash damage anointment if they're far away or spread out. If they're grouped up, you can grasp kill most things thanks to revelation and sometimes a Remnant orb. For bosses or single targeting use a face puncher with 300/90 anoint. For bonus damage on the elemental projector, shoot your complex root and run into the shots to dot yourself with radiation. Since we use the Rad suit, we're immune to radiation damage. Just remember that if you try to do any other damage other than radiation, you're probably going to kill yourself with the explosion. Stick with radiation and kinetic if you can help it.
Weapon #1: Complex Root. Make sure its has Radiation as one of the elements and 200% Splash damage anointment
Weapon #2: Face Puncher with 300/90 anoint.
Class mod: I use a Phasezerker, but you can use anything with splash damage. Melee and weapon damage are nice bonus stats to look for in addition to splash damage.
Artifact: Elemental Projector White Elephant with AOE damage
Shield: Rad suit with ASE Radiation damage. Grenade: your choice, I use it's piss. Just don't get anything with an ASE elemental anoint on it.
Skill tree: The following choices gives us access to all 3 elements. Change the element at will depending on which zone or fight you're in.