Lt. Colonel Thaxis, The Wise

Whenever Lt. Colonel Thaxis enters the battlefield, you may tap or untap target creature.
{3}{w}{u}: Choose up to two target creatures. Tap
those creatures. They don't untap during their controller's next untap step.
"In the tapestry of celestial alignments, we navigate
the currents of cooperation. In harmony, our
adversaries become allies, and the sky is our
canvas of unity."