Bloodroot Apothecary

• WWizards of the Coast2024-07-26
  Official Ruling
  Any other effects of that damage, such as life gain from lifelink, still apply.
• WWizards of the Coast2024-07-26
  Official Ruling
  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.
• WWizards of the Coast2024-07-26
  Official Ruling
  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.
• WWizards of the Coast2024-07-26
  Official Ruling
  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 three poison counters.
• WWizards of the Coast2024-07-26
  Official Ruling
  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.
• WWizards of the Coast2024-07-26
  Official Ruling
  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.
• WWizards of the Coast2024-07-26
  Official Ruling
  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.
• WWizards of the Coast2024-07-26
  Official Ruling
  If the target player is an illegal target as Bloodroot Apothecary's second ability tries to resolve, it won't resolve and none of its effects will happen. No player will create a Treasure token.

Rulings via Scryfall