Nahilda's choice of weapons as dendro archon varies widely, one of the B3 weapons is quite calculated, namely the Magic Guide weapon which gives the effect of increasing damage to enemies affected by Hydro or Electro, so on the Nahilda team there must be an Electro support character and a Hydro support character.
The team :
Nahilda onfield DPS
Zhongli support Shield
Shogun sub DPS & Electro Support
Xinqiu Support Hydro
Hopefully useful for F2P players