With 10 creatures on the board, you can tap just a couple of mana and tutor up a fistful of cards
Once per turn, during either players main phase, you can ritual summon a Megalith monster from your deck using this card and cards in your hand/field as materials
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
Remember, you can use Lo, The Prayers of the Voiceless Voice as the entire ritual material
Then the cards are simply shifted, connecting the deck again
This makes it a useful generic extra deck monster that can still help you climb into other Link plays