This game is similar in that way too, except the "Master" spells require source. All that means is, you'll be casting the spells similarly as in the previous game, but with more downtime afterwards simply because of the hoop jumping to get source back (which isn't hard, it's just corpse hunting, waiting on cooldowns or going back to a pool each time is tedious).
In other game forums for fps it is fun to read comments about the “infinite ammo” problem where some argue that every time you run out of ammo there should be a box just round the corner. Because saving ammo and having to think about how to conserve what you have is “tedious”.