Theyre not game-warping, with the exception of maybe Shizo, Death's Storehouse, but they interact favorably with cards that count legendary permanents
Take your seats
Theres no cast restriction, meaning if you blink her, youll still get the requisite number of tokens
It lets you milk other cards for value far easier and so while Finks is weaker that the rest of this list for direct value it is likely the best for assisting indirect value
Two of the easiest upgrade paths would be to head toward a big artifact / reanimator strategy with cards like Goblin Welder, Daretti, Scrap Savant, and other huge artifact finishers like Wurmcoil Engine, or play a token- / Thopter-themed deck with the help of cards like Sai, Master Thopterist, Pia and Kiran Nalaar, and friends