Scout Trooper

Flash, first strike
When Scout Trooper enters the battlefield, you may tap target creature. If you control another Trooper, that creature doesn’t untap during its controller’s next untap step.
{1}, {t}: Look at the top 3 cards of your deck, then rearrange them in any order, then put them back
at the top of your deck

“They’re fast, quiet, and already gone before
you realize you’ve been spotted.”
- Kara Vex