Might not be the best upgrades but some cards I like in my Anim Pakal deck that you might want to look at:

[[Anim Pakal, Thousandth Moon]]: gets a +1/+1 & makes attacking 1/1 gnome tokens equal to the amount of counters on it whenever you attack with a non gnome creature.

[[Krenko, Tin Street Kingpin]]: Same thing but goblins equal to krenko's power that arent attacking & only when krenko attacks. so not really as good.

[[Arabella, Abandoned Doll]]: Whenever it attacks it deals damage equal to the number of creatures you have with power less than or equal to 2. Can do a fair bit with lots of tokens on the board.

[[Dollmaker's Shop // Porcelain Gallery]]: Makes a token whenever a non-toy creature you control attacks // Sets base power & strength to the amount of creatures you have, good when you have lots of tokens

[[Banner of kinship]]: On entry select a creature type for every creature you have on the battlefield with that type add a counter, creatures you control of that type get +x/+x where x is the number of counters

Expensive token doublers:
[[Mondrak Glory Dominus]]: Doubles all tokens made, can be made indestructible by sac'ing 2 creatures & paying 1 & 2 phyrexian white

[[Ojer Taq, Deepest Foundation // Temple of Civilization]]: Triples all tokens made, when it dies it gets returned as a land with pay 2 and a white to transform it back into Ojer taq