A big creature without evasion isnt so good in a sacrifice deck, the cost to draw cards is steep, and the sacrifice ability has issues both with finding fodder and with killing relevant creatures after turn four
Put one of those cards into your hand at random and shuffle the other into your library
Candidate: Laboratory Maniac It's not exactly a strong choice, but since you mill your own deck quite a bit, it's an option
The Slim Sleeves build and design cater more to cards than anything else, so if thats mostly what youre using (in addition to a small amount of cash), then youre probably not missing out
They might not seem to have much in common, but this week the two fantasy lands came together to create magic
Loot, the Pathfinder Paying for three cards once would be pretty mediocre on its own, but any Loot, the Pathfinder deck worth its stuff circumvents exhausts once per game restriction, probably by flicking Loot with Displacer Kitten