Theres a big chance that you could go infinite with it in some scenarios where you can double your counters and consistently add Saprolings to the board
In this case, however, the term "proxy" may no longer be applicable, as these cannot be considered substitutes for existing objects
This lets you pay it in installments though, and it is nice that you can just play it to draw the card and hold on to the life gain for a little bit later, especially if youre in GW and you have some things that this can trigger for you
Strong artifact ramp package featuring Arcane Signet, Coalition Relic, Commander's Sphere, Firemind Vessel, and Wayfarers Bauble
Indeed I rate Worldwaker as one of the best threats in cube but when you are limiting yourself to few walkers you want ones that do planeswalker things