Polliwallop is a powerful bite spell thats easy to reduce to 1 mana, while Splash Portal is a flicker that cantrips in a frog deck
To keep the speedometer ticking upward, the deck leans on pingers, chip damage sources, and oddball effects that slowly nudge opponents to make it easier to reach maximum speed and unlock that doubled draw mode
Having everyone at such low life makes everything a giant threat, meaning players who were previously on the cusp of victory can suddenly be killed by a slight breeze
If you are building on a budget, wait a few weeks after release
It would also be less of a feel bad too if someone lost their stuff they built around but weren't hurting you like that Windborn Muse to keep them alive while you needed to answer the Aggro deck with 5 dorks and a Consecrated Sphinx from another player and such
They both have power which scales based on the number of instants and sorceries in your graveyard