It is not the best Exclude nor is it the best (cycled) Renewed Faith but it is certainly a lot lot better for having these modes
[9] Rule of thumb: Aggro decks need fewer lands and big decks need more lands
There are plenty of ways to make it so you have either drawn your entire deck or self-milled yourself, with the final entry on this list a fantastic way to set up this win condition
Being able to control what cards you get is really helpful, especially early on, and getting the right song at the right time could really change the pace of a game - plus, if you get a high cost song, you can easily sing it next turn once her ink is dry
In all other zones rules refer to the creature cards
Killing the summons before they sacrifice themselves sounds like a waste of a removal spell, but when that removal comes as a free bonus on a creature, it doesnt feel quite so bad