AttackChild's Punch
Flip a coin. If 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. Blaine's Kangaskhan is 36/132, in position 36 of 132 on this checklist. Before it is 35 Blaine's Growlithe, and after it is 37 Blaine's Magmar. The listed rarity is Uncommon.
Blaine's Kangaskhan is a Basic Colorless Pokémon with 80 HP. The card lists level 36. In the Pokédex this is Kangaskhan (#115), generation 1 (Kanto).
Ken Sugimori illustrated this card. The same name is on 1,112 other cards in the catalog.
Kangaskhan (#115) has 33 other cards in the catalog. Those other cards are in 25 sets. The other printings with a release date run from 1999 to 2026. The earliest other card is Kangaskhan 5/64 in Jungle (1999). That card is named Kangaskhan, while this one is Blaine's Kangaskhan. That card lists 90 HP, and this one lists 80 HP. The rarity there is Rare Holo, and here it is Uncommon. Mitsuhiro Arita illustrated that card, and Ken Sugimori illustrated this one. 31 other cards of Kangaskhan list a different HP.
The attack Child's Punch lists 10 damage. The cost is Colorless. Flip a coin. If tails, this attack does nothing. One-Two Punch is another attack lists 30+ damage. The cost is Colorless, Colorless, Colorless. Flip a coin. If heads, this attack does 30 damage plus 10 more damage; if tails, this attack does 30 damage. Weakness is Fighting ×2. Resistance is Psychic -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. Kangaskhan 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 Blaine and his Pokémon. I still need this card.
Flip a coin. If tails, this attack does nothing.
Flip a coin. If heads, this attack does 30 damage plus 10 more damage; if tails, this attack does 30 damage.
Gym Heroes, in the Gym series. It was released on August 14, 2000. The printed size is 132.
36/132. It is entry 36 of 132 in this checklist.
Ken Sugimori. The catalog lists 1,112 other cards with that illustrator.
Uncommon.
Kangaskhan #115, generation 1 (Kanto).
Child's Punch (10) and One-Two Punch (30+).