Poison Arrow [Portal Three Kingdoms] Magic 2010 Set: Double Masters 2022 Type:

Set: Double Masters 2022 Type: Creature — Centaur Warrior Rarity: Uncommon Cost: {3}{G}{G} Heroic — Whenever you cast a spell that targets Centaur Battlemaster

Set: Commander 2019 Oversized Type: Legendary Creature — Naga Wizard Rarity: Mythic Cost: {1}{B}{G}{U} The first face-down creature spell you cast each turn costs {3} less to cast

and to the rest

Set: Commander Anthology Type: Creature — Snake Shaman Rarity: Common Cost: {1}{G} Sacrifice Sakura-Tribe Elder: Search your library for a basic land card

Same answer

Poison Arrow [Portal Three Kingdoms] Magic 2010 Set: Double Masters 2022 Type:Set: Portal Three Kingdoms Type: Sorcery Rarity: Uncommon Cost: {4}{B}{B} Destroy target nonblack creature. You gain 3 life. In ancient China, not wearing armor could be a fatal mistake. Guan Yu, Zhou Yu, Sun Ce, and other heros were struck by poison arrows.