If you do, Hurska gives a creature +X/+X, with X equal to the amount of life you just gained
Late in a game, swapping a useless land for literally any other card can swing the match in your favor
The difference can be hard to ascertain at times, but the main thing that marks a proxy as acceptable to Magic's creators is if it couldn't be passed off as an official Magic card
It also buffs your Rogues by rapidly milling your opponent and gaining potential card draw
Focus on SARs (Special Art Rare) and URs (Ultra Rare) worth $75+ in raw condition
Ultimately, you want to have three turns' worth of plays in your starting hand , though, to keep the pressure on your opponent, especially if they're playing with a deck that requires a slow build in turns one to three