All we have to do is use the calculator to input the information
Returning mechanics Proliferate Whenever a card with Proliferate activates, the player controlling it may add on an additional counter to any permanent or player, provided at least one counter of that type is already in place there
-Theros is a world of Mediterranean landscapes, populated by vindictive gods, brutal monsters, and cunning heroes
With 30 Templar Knights in the deck, we have a roughly 77% chance of hitting at least one more Templar Knight off of a single Thrumming Stone trigger, and we should be able to reliably get multiple Templar Knights if we ever untap with a Thrumming Stone in play
the second effect's worthless given nobody in their right mind runs Doomfire in any 'meta' Volcanic build
Its just wild to say what Nat said ^ because the old and new standard are just functionally different