Contaminant Grafter

Mana cost: {4}{G}
Type: Creature — Phyrexian Druid
Power / toughness: 5 / 5
Set: Phyrexia: All Will Be One Commander #55 (rare)
Price: $9.05 USD

Trample, toxic 1
Whenever one or more creatures you control deal combat damage to one or more players, proliferate.
Corrupted — At the beginning of your end step, if an opponent has three or more poison counters, draw a card, then you may put a land card from your hand onto the battlefield.

Contaminant Grafter has 2 printings, first in Phyrexia: All Will Be One Commander (2023). EDHREC ranks it #4,104 among Commander cards. It appears most in Atraxa, Praetors' Voice decks (11,647 on EDHREC). 1 public deck on TCG runs it. It has 7 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Contaminant Grafter

Corrupting Influence - Phyrexia: All Will Be One Commander, led by Ixhel, Scion of Atraxa

Commanders that run Contaminant Grafter most

Deck counts from EDHREC.

Often played with Contaminant Grafter

Cards that show up in the same decks on EDHREC.

Rulings

2023-02-04: Multiple instances of toxic are cumulative. For example, if a creature has toxic 2 and gains toxic 1 due to another effect, combat damage that creature deals to a player will cause that player to get 3 poison counters.
2023-02-04: Damage dealt by a creature with toxic grants the same number of counters regardless of how much damage is dealt. Notably, if a replacement effect modifies the damage in some way (such as that of Gratuitous Violence), the number of counters given remains unchanged.
2023-02-04: If a creature with toxic deals combat damage to a creature or planeswalker, or if it deals noncombat damage, toxic has no effect and no player gets poison counters.
2023-02-04: Any other effects of that damage, such as life gain from lifelink, still apply.
2023-02-04: Toxic doesn't change the amount of combat damage a creature deals. For example, if a 2/2 creature with toxic 1 deals combat damage to a player, that creature will deal 2 damage. The results of that damage are the player loses 2 life and gets a poison counter.
2023-02-04: Conversely, replacement effects that apply to the number of counters put on a player can modify the counters placed this way. For example, Vorinclex, Monstrous Raider's last two abilities can apply to counters placed this way.
2023-02-04: A player with ten or more poison counters loses the game. This is a state-based action and doesn't use the stack. In other words, it happens immediately and players can't respond to it, just like a player losing the game due to having 0 or less life.