I typically use a single Crusader in my anti-fg rainbow deck to Endow either Eternity or Pulverizer, so I can literally run with both online. It's better than Animate Weapon because I can Endow as soon as I play the weapon I really need, without having to worry about permanent control. Because of this, it is priceless against opponents like Divine Glory, as decking out is often an issue. A single Crusader can go a long way in solidifying your win percentage.