That's handy because you never know when a random common or uncommon like Stock Up or Into the Flood Maw is going to spike in price
Compared to Sower she is more robust due to having persist however most of the time you want to make this guy with a mana open as tapping out to drop a 2/2 you don't want involved in much combat and therefore doesn't offer much tempo can be very risky, it can easily lead to them untapping and getting out the card they were holding back for fear of other counters
If you just play it alongside more conventional ramp effects you will really struggle to get much value from it, you will run out of lands in hand to make
But it gets a bit more complicated since it also affects your opponent's creatures while also taking those creatures into consideration
If you would like to purchase more units, please visit your local store at time of release
Piplup will, sadly, probably never be as popular as, say, Squirtle, but on the current market, this card actually feels extremely undervalued