Marsh Viper⁣ - Fifth Edition⁣ (Common)

Marsh Viper is a 1/2 Snake creature from Fifth Edition that deals two poison counters to a player whenever it inflicts damage. This ability can quickly escalate the threat level, as a player with ten or more poison counters loses the game, making it a key component in poison-focused strategies. While its mana cost is a bit high for a low-power creature, it can be used effectively in decks that aim to control the board and chip away at an opponent's life total through poison.