How to evolve Poliwag on TalonMC

The full line is Poliwag → Poliwhirl → Poliwrath → Politoed. Here is exactly what each stage needs.

Lv 25

Water Stone

Kings Rock

Stage by stage

Evolves into	Requirement	Type	BST
Poliwag	Base form	water	300
Poliwhirl	Level 25	water	385
Poliwrath	use Water Stone	waterfighting	510
Politoed	use Kings Rock	water	500

If it evolves by level, nothing else is needed. Just battle and it happens.
If it needs a stone, those are mined as ore or crafted. Some have biome bias, so a stone you cannot find is usually in a biome you have not visited.
If it needs friendship, walking with it and levelling it up both build that. A Soothe Bell speeds it up and Luxury or Friend Balls start it higher.
If it needs a trade, a Link Cable simulates one so you do not need a partner.
An Everstone blocks evolution if you want to keep the current form.

Full stats for each stage are in the Pokedex, and breeding covers passing natures and IVs down the line.