Magikarp is card #64 of 107 in Deoxys (2005), a Common illustrated by Hisao Nakamura. At about $172 it is the #17 most valuable card in the set. In a Deoxys booster it turns up about once every 6 packs. It is one of 45 Magikarp cards printed so far.
1999Base Set
2003Skyridge
2005Deoxys
2006Holon Phantoms
2010HeartGold & SoulSilver
2013Legendary Treasures
2018Dragon Majesty
2021Celebrations: Classic Collection

















An ungraded Magikarp from Deoxys sells for about $172. A PSA 10 is worth more, roughly $2,237 by our estimate, and a PSA 9 around $688.
It is a Common, and it shows up about once every 6 Deoxys packs.
Hisao Nakamura drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Deoxys booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.