Rhythm of the Wild

If a creature entering the battlefield has riot but can't have a +1/+1 counter put onto it, it gains haste.

Riot is a replacement effect. Players can't respond to your choice of +1/+1 counter or haste, and they can't take actions while the creature is on the battlefield without one or the other.

A noncreature card that happens to be entering the battlefield as a creature will have riot (for example, Rusted Relic while you control three other artifacts). Similarly, a creature card entering the battlefield as a noncreature permanent won't have riot (for example, Thassa, God of the Sea while your other permanents contribute only four to your devotion to blue).