A lot of the other ideas posted above are fire, like you could pre-make a black and gold art UR binder for $100 too and as a collector that is a pretty good way to stretch your budget, but as a casual child collector the best part was opening packs because it feels like you earned your collection
Lets check out the most valuable Urzas Destiny cards
Sacrifice after III.) I Target creature you control fights up to one target creature you dont control
Of which, there are a few honourable mentions: A Japanese promotional card from the XY era, this one can be found for around $8,600 when its graded to a PSA 10, although its average price sits around $7,500
My general rule of thumb is to shoot for roughly 6-10 in most cases, focusing primarily on tutors that cost 3 mana or less, have access to a fairly wide selection of targets, and actively work toward my decks game plan for winning
the number of Collector Boosters sold