AttackEpic Splash
Flip 2 coins. If either of them is tails, this attack does nothing.

Magikarp is Pokédex #129, generation 1 (Kanto). Magikarp is a Basic Water Pokémon with 30 HP. The card lists Gyarados, Gyarados (#130) under evolves to.
Magikarp sits at 19/98 in Ancient Origins, position 19 of 101. Before it is 18 Volcarona, and after it is 20 Gyarados. The set belongs to the XY series. It was released on August 12, 2015. The printed size is 98. This checklist is longer, at 101 cards. The listed rarity is Common.
The attack Epic Splash lists 30 damage. The cost is Water. Flip 2 coins. If either of them is tails, this attack does nothing. Weakness is Lightning ×2. Retreat cost is 1. The flavor text reads "In the distant past, it was somewhat stronger than the horribly weak descendants that exist today."
Magikarp (#129) has 44 other cards in the catalog. Those other cards are in 39 sets. The other printings with a release date run from 1999 to 2026. The earliest other card is Magikarp 35/102 in Base (1999). Both list 30 HP. The rarity there is Uncommon, and here it is Common. Mitsuhiro Arita illustrated that card, and Akira Komayama illustrated this one. 4 other cards of Magikarp list a different HP.
The illustrator line reads Akira Komayama. I count 239 other cards in the catalog with that illustrator.
Ancient Origins set binder is where a full Ancient Origins set goes. This card fills one slot there. A generation binder holds one card of each species. Magikarp can fill a slot in Generation 1 binder (Kanto). I still need this card.
Flip 2 coins. If either of them is tails, this attack does nothing.
In the distant past, it was somewhat stronger than the horribly weak descendants that exist today.
Ancient Origins, in the XY series. It was released on August 12, 2015. The printed size is 98.
19/98. It is entry 19 of 101 in this checklist.
Akira Komayama. The catalog lists 239 other cards with that illustrator.
Common.
Magikarp #129, generation 1 (Kanto).
Epic Splash (30).