The first counter allows Urzas Saga to tap for colourless mana, the second adds an ability you can pay two for to put a 0/0 Construct into play that gets +1/+1 for each artifact you control, and the final ability lets you search your library for an artifact with a mana cost of 0 or 1 and then put it straight into play
I think even a single target Replenish would put serious constraints on the format and the types of designs WotC could safely make
With the pieces in place, Emry recasts Mox Opal, Jeskai Ascendancy untaps Emry, and the legend rule clears the way for recursion
The event will break players into two teams, Red and Green, as Pokemon Blue in the US was actually Pokemon Green in Japan when it first released on February 27, 1996
Furthermore, the pull rate in Prismatic Evolutions is 1 in 45 packs, upgraded from the 1 in 90 packs, so you have better odds of pulling for Special Illustration Rares