AttackDrill Tackle
Flip 2 coins. If 1 or both of them are tails, this attack does nothing.

Gym Heroes is a set in the Gym series. It was released on August 14, 2000. The printed size is 132, and the checklist is the same length. Brock's Rhyhorn is 70/132, in position 70 of 132 on this checklist. Before it is 69 Brock's Onix, and after it is 71 Brock's Sandshrew. The listed rarity is Common.
Brock's Rhyhorn is a Basic Fighting Pokémon with 70 HP. The card lists level 29. In the Pokédex this is Rhyhorn (#111), generation 1 (Kanto). The card lists Rhydon, Rhydon (#112) under evolves to.
Ken Sugimori illustrated this card. The same name is on 1,112 other cards in the catalog.
Rhyhorn (#111) has 25 other cards in the catalog. Those other cards are in 21 sets. The other printings with a release date run from 1999 to 2024. The earliest other card is Rhyhorn 61/64 in Jungle (1999). That card is named Rhyhorn, while this one is Brock's Rhyhorn. Both list 70 HP. Both list the rarity Common. Mitsuhiro Arita illustrated that card, and Ken Sugimori illustrated this one. 21 other cards of Rhyhorn list a different HP.
The attack Drill Tackle lists 70 damage. The cost is Fighting, Colorless. Flip 2 coins. If 1 or both of them are tails, this attack does nothing. Weakness is Grass ×2. Resistance is Lightning -30. Retreat cost is 3.
I keep a set binder for Gym Heroes, meant to hold every card of that set. This card is one slot in the Gym Heroes set binder. A generation binder holds one card of each species. Rhyhorn can fill a slot in Generation 1 binder (Kanto). Themed lists that include this exact card are Trainer's Pokémon, Kanto Gym Leaders and their Pokémon, and Brock and his Pokémon. I still need this card.
Flip 2 coins. If 1 or both of them are tails, this attack does nothing.
Gym Heroes, in the Gym series. It was released on August 14, 2000. The printed size is 132.
70/132. It is entry 70 of 132 in this checklist.
Ken Sugimori. The catalog lists 1,112 other cards with that illustrator.
Common.
Rhyhorn #111, generation 1 (Kanto).
Drill Tackle (70).