National Dex OU · 2026-04
The NatDex OU Field Guide
A practical, opinionated, interactive companion to the National Dex OU metagame — with a live damage calculator, speed-tier explorer, type profiler, and the cores & teambuilding tools to actually build aggressive Offense.
00
Overview
What NatDex OU is and how to read this guide.
01
NatDex Mechanics
Megas, Z-moves and the format-defining mechanics.
02
Viability Tiers
The viability ranking of every relevant Pokémon.
03
Top Threats
Deep dives on the 24 most important Pokémon.
04
Archetypes
HO, Offense, Balance, Stall and how they differ.
05
Common Cores
The two-mon cores that anchor winning teams.
06
Building Offense
A checklist-driven method for aggressive Offense.
07
Sample Teams
Annotated teams you can learn from.
08
Speed Tiers
The Speed benchmarks your team must beat.
09
Matchup Matrix
How the top threats stack up against each other.
10
Glossary
Every term and abbreviation, defined.
11
Appendix: The Tera Ban
The Terastal ban, set-legality checklist, and what changes vs Gen 9 OU.