What it does on the ladder
Leafeon appears on 0.06% of Regulation M-B teams, which
is 215th of the 282 Pokémon with enough games to measure.
The move it almost always carries is Solar Blade, on 80% of sets.
The item is usually Life Orb at 53.5%.
The ability is split: Chlorophyll on 98.6% and Leaf Guard on 1.4%.
Those are Smogon's published usage figures, not anything measured here, and they describe what
the ladder plays rather than what is strongest. The full set is in the panel above.
The Pokémon itself
Leafeon is number 470 in the National Dex, a Sinnoh Pokémon, Grass
with a base stat total of 525 — 67th of the 234 Pokémon
legal in this regulation. Its best stat is Defense at 130, 18th
in the format; its weakest is Sp. Atk at 60, 177th.
It can have Leaf Guard and Chlorophyll.
The Champions module tiers it UU.
It sits in a 2-stage line: Eevee → Leafeon.
Not all of that line is legal in this regulation — Eevee is not.
What gets through
As Grass, 5 of the eighteen attacking types do extra damage to it. It
resists 4. The board above
has all of it. 5 other legal Pokémon share the same typing and the same board: Tsareena, Serperior, Sceptile, Meganium, Simisage.
What threatens it
Smogon publishes no head-to-head checks-and-counters data for doubles formats, so this list is
computed, not measured: the most-played Regulation M-B Pokémon carrying a damaging
move of a type Leafeon takes extra damage from.
- Incineroar — Flare Blitz (Fire, ×2), on 91.2% of its sets
- Charizard-Mega-Y — Heat Wave (Fire, ×2), on 99.2% of its sets
- Sneasler — Dire Claw (Poison, ×2), on 63% of its sets
- Pelipper — Hurricane (Flying, ×2), on 98.1% of its sets
- Staraptor-Mega — Brave Bird (Flying, ×2), on 83.4% of its sets
- Aerodactyl-Mega — Dual Wingbeat (Flying, ×2), on 91.2% of its sets
Speed and weight
At level 50 with a boosting nature and full investment, Leafeon reaches
161 Speed; left uninvested with a neutral nature it sits at
115. Invested, it outruns 12 of the 20
most-used Pokémon in the regulation when they are invested too — which is the comparison that
decides who moves first.
It weighs 25.5 kg, so Grass Knot and Low Kick hit it for 60 base
power. That is a real consideration in a format where both are common.
Its move pool
Leafeon learns 94 moves in the Champions data.
48 of them do damage, across 11 of the eighteen
types, and 12 share a type with it and so get the same-type bonus.
Its hardest-hitting same-type move is Leaf Storm at 130 base power, though the biggest number in the pool is Giga Impact at 150.
It also has priority: Quick Attack at +1.
That pool is what the team builder reads from when you seat it, and the
damage calculator will take it as the attacker with
the form already chosen.