The effect of “Spiral Spear Strike” that causes you to draw can be chained to. But the first effect is a Continuous Effect that cannot be chained to.
If you have 2 copies of “Spiral Spear Strike”, or “Spiral Spear Strike” and a “Gaia the Dragon Champion” equipped with “Fairy Meteor Crush”, the damage to your opponent’s Life Points is not doubled. (In the case of “Fairy Meteor Crush”, you still can draw for the “Spiral Spear Strike” effect.)