they can produce a surprise win in a flurry of prowess triggers to snatch victory from your opponents
But neither card can match the absurdity of Natural Order, which, for the low, low cost of four mana and sacrificing a green creature, lets you put the best green creature from your deck directly on the battlefield, which often means your opponent staring down a Progenitus or a Craterhoof Behemoth as early as Turn 2 or 3, which is pretty wild
Aside from basic lands, you are only allowed one copy of each card in the deck
In Gruul stompy, you'll never be short of creatures to put these counters on, but the additional 1/1 hamster is a nice touch
Time travel can interact with these and make you draw more cards, scry more, or exile more permanents