It is critical to note that you can target different creatures and I would hope to draw two cards most of the time
There aren't actually any rulings about how the player must perform the shuffle, meaning that they could theoretically conceal their shuffling completely and turn your opponent's blocking into a complete guessing game as opposed to trying to follow the shuffle around which might have been the intention of the card
If an artifact enters the battlefield under your control and then Sentinel Sarah Lyons enters the battlefield under your control later in that turn, creatures you control will still get +2/+2 that turn as long as Sentinel Sarah Lyons remains on the battlefield and under your control
Kaldheim had Vorinclex, and Kamigawa: Neon Dynasty had Jin Gitaxias
Then, in the very next Draft playtest, Ian Duke managed to build a slow green-black graveyard deck that melded them not once, not twice, but three times over the course of the playtest