Assert Dominance

As an additional cost to Assert Dominance, {t} target creature you control, it can't be untapped during your next untap step
Counter target spell unless that spell's controller {t} a creature they control, it can't be untapped during your next untap step, you may repeat this process to counter this effect and the spell's controller may do the same
t pose to assert your dominance boi
~Meme lords