Rule 208.4 · Power/Toughness
Some effects refer to a creature’s “base power,” “base toughness,” or “base power and toughness.”
Subrules
Effects that set a creature’s power and/or toughness to specific values may refer to base power and/or toughness. Other continuous effects may further modify the creature’s power and toughness. See rule 613, “Interaction of Continuous Effects.”
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.”