Rillaboom

Legal regulations: regulation-m-a

Rillaboom is the format's premier Grassy Terrain setter and one of the most reliable physical support pieces in Regulation M-A. Its ability sets Grassy Terrain on entry, which boosts its own Grass attacks and provides passive recovery to its team, and its signature move, Grassy Glide, is a priority attack that lets it move before faster threats. Its Grass STAB pressures the Water and Ground cores of the format, and its bulk is solid enough to absorb hits. Its weaknesses are the ones Grass-types always carry — vulnerable to Fire, Ice, Flying, Poison and Bug — and its speed is mediocre, so it relies on its priority to function. It also lacks the raw damage output to be a primary breaker. It functions best as a support piece that sets terrain, pressures with priority and enables the format's terrain teams. Rillaboom pairs well with partners that benefit from Grassy Terrain and with redirection that keeps it safe. It is one of the format's most reliable and feared support Pokémon, and it anchors the terrain-based offense that defines the current meta.

Use this page to understand Rillaboom's role in the current VGC metagame. Check the base stats and Level 50 benchmarks to plan your EV spreads. Review common moves, items, abilities and Tera types to see what the community uses most. The partners section shows which Pokémon pair well with Rillaboom, while counters and checks highlight what to watch out for in team preview.

Last updated: July 2026 (Regulation Set M-A). Data is based on available competitive trends and editorial review.

Rillaboom performs best when its role is clearly defined in team preview. As a Terrain Setter and Priority Pokémon, focus on positioning it where it can execute its job without being forced into unfavorable exchanges.

When teambuilding, pair Rillaboom with Pokémon that cover its type weaknesses (see counters section below) and provide the speed control or redirection it needs to function. Review the common moves and items section for established sets, then adjust based on your team's specific needs.