Can't move instantiated 2d game oject.

Hello guys! Stuck in problem trying to make simple 2d shooter. Here is a Fire spell script:

 if (Input.GetKeyDown(KeyCode.Space) && CanSpell && facingRight)
      {
          
  GameObject SpellClone = Instantiate(spellObject, spellSpawnPoint.transform.position, Quaternion.identity) as GameObject;
  SpellClone.transform.position += new Vector3 (SpellSpeed * Time.deltaTime,0.0f , 0.0f);
        }

Unity runs it well without any errors but then I'm trying to fire the game pauses. Whats wrong? All proper game objects are selected in inspector.