What is the best first item on Nidalee when she mainly wants to impose map tempo?

Luden's Echo remains the best standard first item because it immediately reinforces poke, map pressure, and the credibility of her picks.

When should you truly move Riftmaker earlier on Nidalee?

When the game becomes too front-facing or too tanky for a simple poke + fast execution plan. Riftmaker then helps keep real combat presence.

Stasis or Protobelt on Nidalee depending on whether she mainly has to survive or convert an angle faster?

Stasis is better against burst and lethal counter-response after jumping in. Protobelt becomes better if the real issue is reaching the right target at the right angle.

Nidalee Wild Rift Best Build Guide (Patch 7.2a)

Nidalee Wild Rift Best Build Guide

Tempo predator build: Nidalee does not only win by killing, but by forcing the enemy to play the map under constant threat of spear, invade, or very fast collapse. The build must therefore protect that initiative before the simple one-shot.