mtg how many unique cards 1000 Magic the Gathering Lot w/ Rares and Foils INSTANT COLLECTION !!! : Toys & Games All 'Any Number' Cards -

This activation represents the Weakstone, which makes things weaker

I could conceive of Walking Ballista being too powerful for some Cubes- maybe you have a heavy focus on creatures with one toughness that dont generate value

At the beginning of each upkeep, if no spells were cast last turn, transform this creature

You simply can't play them if you don't have the good land support and the deck dumps some value at that point

Obviously, this average doesnt tell the full story, as part of the fun is pulling a high-value bomb like Urzas Saga

If there is another turn after this resolves you're so far ahead it's elimination time