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.
Sheoldred's Headcleaver
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.
Any other effects of that damage, such as life gain from lifelink, still apply.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Andrey Kuzinskiy
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
