Maraca Smack!

Gift a tapped Bug (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Bug creature token before its other effects.)

Choose target creature you control and target creature you don't control. Put a +1/+1 counter on the creature you control if the gift was promised. Then those creatures fight each other.

(Longstalk Brawl)