public NavMeshAgent agent;
float power = -10;
float offset;
void OnEnable() {
  agent.updatePosition = false;
}
void Update() {
  power = Mathf.Clamp(power - 10 * Time.deltaTime, -10, 1000);
  offset = Mathf.Clamp(offset + power * Time.deltaTime, 0, 10);
  transform.position = agent.nextPosition + Vector3.up * offset;
}
public void Boom(float power) {
  this.power += power;
}

public class SwithAnim: MonoBehaviour
{

    void OnTriggerEnter(Collider other)
    {
        if (other.tag == "Untagged")
        {
                var animator = gameObject.GetComponent<Animator>();
                animator.enabled = true;
        }
    }
}

public class SwithAnim: MonoBehaviour
{

    new public Animator animator; // ставишь в инспекторе префаба

    void OnTriggerEnter(Collider other)
    {
        if (other.tag == "Untagged")
        {
                animator.enabled = true;
        }
    }
}

if(bl == null) return;