It doesn't often "require" its own hub, but there are times when it could be useful
The bonus red in this list is actually more relevant than it looks, but I think Vial Smasher the Fierce lost enough power with the delve spell ban that just having Leovold or Tasigur is a big upgrade
Darksteel Colossus 5 Only better than Blightsteel in that it works towards the same win condition as your other dorks and so this can finish someone off or get them in range such than something else will finish them off
Doing so, on the same card, is even more awesome
The creative design and variety of the cards make "Wings of the Captain" a true highlight for collectors and players alike
Combining Keldeo-GX, Float Stone, and Eelektrik, Bristow was able to retreat Rayquaza each turn, attach a bunch of energy, and then send it back out onto the battlefield to deal damage again