It also buffs your Rogues by rapidly milling your opponent and gaining potential card draw
There's also the famous combo of Heliod, Sun-Crowned and Walking Ballista to gain infinite life and deal infinite damage to your opponent
Focus on SARs (Special Art Rare) and URs (Ultra Rare) worth $75+ in raw condition
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
If you do, Hurska gives a creature +X/+X, with X equal to the amount of life you just gained
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