Rua, Impressionable Spren

Flying, vigilance

Whenever a Windrunner you control attacks, tap target nonland permanent an opponent controls.
That permanent doesn’t untap during its controller’s next untap step.

Lopen made a double obscene gesture toward the sky. Rua joined him, making the same gesture, then grew two extra arms to give it more weight.
based on Ojutai, Soul of Winter