Politoed @ Damp Rock
Bubble Beam | Scald | Bubble
If Nidoking is in the evasive stage of a D/E move, then use Dive.
If Nidoking has Double Team clones, then use Surf.
If Nidoking is under Endure and Nidoking is not under Whirlpool and Nidoking is not behind a substitute, then use Whirlpool.