That means that you don't target a player like Bojuka Bog, so you can get around hexproof on a foe, and you don't target the card, so if someone does something like shuffle their graveyard back to their library in response to its ability being on the stack, you can just choose another card
Just like with all cards in Modern, the value increases slowly but steadily, unlike with the instant Standard hits that eventually dwindle in price
Ishgard, the Holy See Faith & Grief provides a strong burst of card advantage later in the game, either to recoup after a board wipe or make use of a bunch of self-mill
If instead I performed a mash shuffle on those decks, where i split the deck in half and interweave the halves, the results would look more like this: SSLSSLSLLSLSLLSLLSLSSLSLLSLSSLSLLSSLSLSSLSSSSSSSSSSSSSSSSSSS LLSSSLSSLSSLSLSSSLSSSLSSLSLSSSLSLSSLSSLSSLLSSLSSSLSSSLSSSLSS The first deck is still worse because there were fewer lands than spells, so there's still a clump of spells at the end, but this pattern will go away after the second mash