AbilityPoison Point
If this Pokémon is your Active Pokémon and is damaged by an opponent's attack (even if this Pokémon is Knocked Out), the Attacking Pokémon is now Poisoned.

Qwilfish is Pokédex #211, generation 2 (Johto). Qwilfish is a Basic Water Pokémon with 90 HP.
Qwilfish sits at 51/202 in Sword & Shield, position 51 of 216. Before it is 50 Lapras VMAX, and after it is 52 Mantine. The set belongs to the Sword & Shield series. It was released on February 7, 2020. The printed size is 202. This checklist is longer, at 216 cards. The listed rarity is Uncommon.
Poison Point is listed as Ability. If this Pokémon is your Active Pokémon and is damaged by an opponent's attack (even if this Pokémon is Knocked Out), the Attacking Pokémon is now Poisoned. The attack Venoshock lists 10+ damage. The cost is Colorless. If your opponent's Active Pokémon is Poisoned, this attack does 60 more damage. Weakness is Lightning ×2. Retreat cost is 1. The flavor text reads "The small spikes covering its body developed from scales. They inject a toxin that causes fainting." The regulation mark is D.
Qwilfish (#211) has 12 other cards in the catalog. Those other cards are in 11 sets. The other printings with a release date run from 2001 to 2026. The earliest other card is Qwilfish 49/64 in Neo Revelation (2001). That card lists 60 HP, and this one lists 90 HP. The rarity there is Common, and here it is Uncommon. Sumiyoshi Kizuki illustrated that card, and Midori Harada illustrated this one. 9 other cards of Qwilfish list a different HP.
The illustrator line reads Midori Harada. I count 352 other cards in the catalog with that illustrator.
Sword & Shield set binder is where a full Sword & Shield set goes. This card fills one slot there. A generation binder holds one card of each species. Qwilfish can fill a slot in Generation 2 binder (Johto). I still need this card.
If this Pokémon is your Active Pokémon and is damaged by an opponent's attack (even if this Pokémon is Knocked Out), the Attacking Pokémon is now Poisoned.
If your opponent's Active Pokémon is Poisoned, this attack does 60 more damage.
The small spikes covering its body developed from scales. They inject a toxin that causes fainting.
Sword & Shield, in the Sword & Shield series. It was released on February 7, 2020. The printed size is 202.
51/202. It is entry 51 of 216 in this checklist.
Midori Harada. The catalog lists 352 other cards with that illustrator.
Uncommon.
Qwilfish #211, generation 2 (Johto).
D.
Venoshock (10+).