Nahida mainly deals DMG by her Elemental Skill, which connects 8 enemies at maximum and deals Dendro DMG to them while triggering elemental reactions. The Elemental Burst of Nahida buffs her Elemental Skill depends on the Element of her teammates.
With aid of Furina and Yelan which can provide Hydro Element even off-field, Blooming can be triggered to produce Dendro cores. Then switch to Sethos of high Elemental Mastery and use his Pyro skills to activate the Dendro cores, which finally trigger Hyperbloom.
As there are two Hydro Characters and one Pyro Character in this team, both the duration of her Elemental Burst and the DMG of Tri-Karma Purification are increased.