You can play only one Supporter card each turn. When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card. Search your deck for an Evolution card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.

Catalog metadata

National Pokédex: 0
Imported from: Vendor Tools Public API catalog

Card details

Identity, type line, stats, and set references

Identity & printing

Name: Professor Elm's Training Method (League Stamp)
Number: 100
Printed number: 100/123
Rarity: Uncommon
Variant: League Stamp
Language code: EN
Print ID: hgss1-100-League-Stamp

Type line & stats

Supertype: Trainer
Subtypes

Battle

Abilities, attacks, weakness & resistance

Market prices (catalog API)

eBay sold comps from the Vendor Tools public catalog — tap a condition below to filter sales, or refresh to pull new data into the catalog

Catalog pricing data as of 28 Mar 2026, 07:26

Guide prices and sold listings come from the Vendor Tools catalog API (eBay completed sales). Use Update prices to request a fresh pull from eBay (limited to once per 24 hours per signed-in user).

Catalog card record updated 28 Mar 2026, 07:26.

No condition guide prices yet. Use Update prices to fetch eBay sold data into the catalog.

Source API: https://api.vendortools.net

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Professor Elm's Training Method (League Stamp)

Overview

Rules