Chishiro, the Shattered Blade

Whenever an Aura or Equipment you control enters, create a 2/2 red Spirit creature token with menace.
At the beginning of your end step, put a +1/+1 counter on each modified creature you control. (Equipment, Auras you control, and counters are modifications.)

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Neon Dynasty Commander

Whenever an Aura or Equipment enters the battlefield under your control, create a 2/2 red Spirit creature token with menace.
At the beginning of your end step, put a +1/+1 counter on each modified creature you control. (Equipment, Auras you control, and counters are modifications.)

Whenever an Aura or Equipment enters the battlefield under your control, create a 2/2 red Spirit creature token with menace.
At the beginning of your end step, put a +1/+1 counter on each modified creature you control.

A creature that is equipped is considered modified no matter who controls the Equipment that's attached to it.

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.

An Aura controlled by an opponent does not cause a creature you control to be modified.

Only creatures can be modified. If a modified creature stops being a creature, it is no longer considered modified.