The ranges take into account the card's condition, from decent condition (PSA 5-6) up to perfect condition (PSA 10)
All that to say, an old-school player has a lot of adjusting to do when picking up the game again
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While both mechanics give players poison counters equal to their N value, toxic is a static ability (doesn't go on the stack) while poisonous is a triggered ability (it does go onto the stack)
In a format like Explorer or Historic that doesn't have the literal The Rack, the backside could be a replacement, although I'm not sure how a discard deck is going to flip the battle
Opponents can lose life based on how many auras including Phyresis are on the field with a Eriette of the Charmed Apple Commander deck