Historical Rules · 2 February 2024
Rule 208.4b
Official source text from the 2 February 2024 Rules release
Some effects check a creature’s base power and/or toughness. These effects see that creature’s characteristics after applying any characteristic-defining abilities and abilities that set power and/or toughness, ignoring any effects and counters that modify power and/or toughness without setting them. See rule 613, “Interaction of Continuous Effects.”