Mimic Vat is great in a deck like this, because it gives us extra ETB effects, Experience Counters, and creatures to sacrifice to keep the board clear (but note we must have a sac effect the Vat forces the tokens into exile otherwise)
During your Main Phase 1: You can send all other monsters you control to the GY
20 The Watcher In The Water Not everything in LotR has to be dark and brooding, but 'silly' doesn't quite fit
His Companion, Clara Oswald is a bit of a unique one
Having a bit more disruption fits the deck well, and unlike Path to the Peak, Grabber can always be played if you need to thin your hand
7 Blast From The Past With Classic Who Released as a part of the four Doctor Who Commander precons, Blast From The Past captures the "classic" era of the show with the 1st through 8th Doctors