3 turn farming

For daily ember and QP Treasure Vault, no Waver nor Kaleido needed.
Ember Lancer days would be a another story, since Arash can't one shot it.
Can't do 3 turns farm in the Training Ground using this set up.

This is my 3 Turn daily farm team set up :
Arash ( Dragon Meridian/Imaginary Element ) + Friend Arash ( same CEs with mine ) + Helena ( Imaginary Element ) + William + Spartacus ( Dragon Meridian/Imaginary Element ).

Helena fill both Arash NP, turn 1 my Arash dead, turn 2 friend Arash dead, Turn 3 Spartacus/Helena NP.
Harry Potter MC is mandatory.

For the CEs, welfare event CEs usually has stronger Atk/effect than Dragon Meridian/Imaginary Element.
Such as Golden Sumo, Halloween Princess, Carmilla Summer CEs or etc.

Notable mention :
Mashu, can charge targetable +20 % NP gauge
Medusa, charge own NP gauge + 20%
Chu Caster, charge own NP gauge + 30 %

But you can also use your own servants to do that.
Servant with NP battery Skill is more recommended.

I use my Helena + Arash + Spartacus and I borrow a Raikou with MLB Kaleidoscope. Arash and Spartacus both need a CE that gives at least 50% starting NP (MLB Dragon Meridian, Halloween Princess, Imaginary Element, Golden Sumo Boulder Tournament, etc).

Helena uses her first skill to boost the NP of Arash and Spartacus, then both Arash and Spartacus each boost their own NP bars the rest of the way with their own skills. Then they each take out a wave, and Raikou comes in and takes out the final wave.

If you don't have Helena, you can also pull this off with Shakespeare and the Mage's Association Mystic Code. Then you'd use Shakespeare to give either Spartacus or Arash 20% NP, and then use mystic code to give 20% NP to the other.

I like this method, because it is consistent and it only requires you to build 3 servants and have 2 CEs. A lot of other setups require you to build 4 servants and have 3 CEs.

Bring an AoE Berserker, use command spells NP charge three times.

There's a few options
1. Friend with Raikou w/ Kaleidoscope (for me she's a true queen of 3 turn farming because she's a Berserker with AoE NP and a decent dmg buff on skills)
2. Arash w/ Kaleidoscope (STELLAAAAAAAAAAAAAAAAAA)
3. Nitocris w/ 2nd skill at rank 8 or higher (instant NP in 1st turn, can inflict Death on all enemies with her AoE NP)
4. Francis Drake w/ 50% starting NP CE + 3rd skill lv 10 (or Imaginary element + 3rd skill lv <10)

Overall in our [NA server] current situation most effective farming requires Waver and/or Kaleido and it's quite hard to avoid since this is the simpliest way

If by "without Waver" you mean "without my own Waver", that is, picking a support Waver is allowed, it's pretty doable.

Requirements would be Arash+Spartacus (both with maxed batteries skills) and an AoE Berserker (I prefer Kiyohime -- Darius and Bloodaxe are good options too), and 50% starting NP CEs for them. You can use Mages Association MC for the 20% extra NP charge, or the Combat Uniform for switching in Shakespeare for 20% charge + Buster buff.

Turn 1: frontline is Arash, Spartacus and support Waver. With their batteries and Waver's 2nd and 3rd skill they go to 100% (starting 50 + 30 + 10 + 10). Arash uses NP, dies, and AoE Berserker joins in in his place;

Turn 2: Spartacus uses NP;

Turn 3: Waver's 1st skill and MC/Shakespeare finish charging AoE Berserker's NP (starting 50+ 30 +20), AoE Berserker uses NP.

Done!

(I just hope support Waver is allowed, instead of this being some sort of challenge. The thing is, if Waver is restricted, you would probably have to rely on things like your own/support Helena anyway, who would do the same job of team-wide 20% charge. Effects like those open so many doors >_< )

I usually use Arash, Medusa , support Waver, and my Salter (or any other whit aoe, but her aoe is stupidly strong enought so)
Arash medusa and salter whit The Immaginary Element ( i got luck and i have 5 of thet).
First turn : weaver 2nd and 3rd skill. Medusa and Arash 3rd skill. Arash Np.
Second turn: weaver 1st on SAlter, mage association np battery on her, Salter Np
Third Turn: Medusa Np.
If the enemy are not the doors, i simply use salter on the third turn instead of the second and i use her buff .

For daily embers i normally use spartacus, arash; sometimes i switch arash for tamamo cat and i use helena if i dont put waver support and kaleido. For Qp i use mordred, bride and tamamo no mae, all buff to mordred and she can farm the 3 turns by herself.