The GT actually one-ups the white lord by throwing ten power on the table from three creatures, for the same mana-cost, and the possibility of infinitely more
There have been quite a few good legendary rats in recent years, thanks mostly to Bloomburrow, but Rat King, Verminister is specifically designed to work with Rat Colony or its older form, Relentless Rats
The Journal is obviously good, but Sance is the keystone of the deck, and the innocuous Human Cleric can gain a bunch of life in the early game before going on to gain us a bunch more life in the late game from all our token copies
That coupled with Ward make Webby an indispensable card, and being able to shift for such a low cost can be helpful in certain situations, too.
Boromir, Warden of the Tower What if Selfless Spirit could hate on obnoxious cards like Etali, Primal Conqueror and Force of Will