This ramp effect works quite well alongside Soul's activated abilities which allow you to discard land in exchange for an effect
And while youre pretty much never going to outright win the game with this, even with double strike, you can take pretty big chunks off your opponents life which is even more important in a format where life starts at 40
Moreover, the grading and reselling of cards is a key element to the game, with some cards being of tremendous value
While their mana costs and cycling costs are all quite high, the Decrees can drastically turn the tide of the game by destroying creatures, wiping out lands, or filling the board with tokens
You can ramp up the impact with Ratadrabik of Urborg, even
7: Search your library for up to three artifact cards with different names, put them onto the battlefield, then shuffle your library