Sets in Standard tend to hover more around the $300 mark, dropping by about half as they rotate, with some, like War of the Spark , having a bit of staying power
By exiling it alongside the Eye of Vecna and the Hand of Vecna, you can create the Lich God himself
The best ones in this kind of build are the ones with powerful enter the battlefield abilities, like Terror of the Peaks
We also have the benefit of all the shocklands in Standard that makes the possibility of a three- or four-color deck more reasonable (and Chromatic Lantern if you really want to be nutty and do all five colors)
If you prefer to keep a general around you can always use Prison Term, which has the added advantage of being able to shift around when bigger threats hit the battlefield
At the beginning of your end step, untap all lands you control