A creature that is equipped is considered modified no matter who controls the Equipment that's attached to it.
2022-02-18
An Aura controlled by an opponent does not cause a creature you control to be modified.
Target creature gets -2/-2 until end of turn. It gets an additional -1/-1 until end of turn for each modified creature you controlled as you cast this spell. (Equipment, Auras you control, and counters are modifications.)
A creature with a counter on it is considered modified no matter what kind of counter it is or which player put it on that creature.
