[VGC18] Tapu Koko - 2 Movesets - Sweeper - Rain Pair

[PerchPond]

It's more efficient to run either Dazzling Gleam or HP-Ice and not both. Dazzling Gleam + HP-Fire/Grass Knot lets you cover more Pokémon and is usually the most appealing move combo. As you mention, Koko's Lando matchup is weak even with HP-Ice, which makes dropping HP-Ice all together probably more efficient, and let a partner like Fini deal with Lando instead. With Dazzling Gleam you can threaten Salamence and Tyranitar, wheras Grass Knot actually KO's Swampert and Gastrodon. IMO Thunderbolt (Thunder if on dedicated rain team), Dazzling Gleam, Grass Knot and Volt Switch is the most appealing (on a Specs set), with HP-Fire being an option instead of Grass Knot outside of rain, for Ferrothorn.