Naganadels Charging Up Ability lets you recover any basic Energy cards you might have lost along the way
[casthaven]Thriving Grubs[/casthaven], [casthaven]Thriving Rhino[/casthaven], [casthaven]Dhund Operative[/casthaven], and [casthaven]Glint-Sleeve Artisan[/casthaven] smash through blues cheap creatures (which are also bad at applying pressure), likely demanding removal
You can circumnavigate that little opening for your opponents to attack by giving your creatures vigilance, ensure they never lose that hexproof shield
However, you can save a few creatures if you're willing to spend additional mana to kick it
There are broader sacrifice decks which are willing to sacrifice anything, like Shattergang Brothers, and sometimes the overlap causes Aristocrat and Sacrifice decks to get blobbed together or mistaken for the other
The mana effect was the one that counted, and there were a lot of good reasons to want to play a deck based around it