Fromper
|
Normally, you're correct. But that's what healing (Kyra's power, Cure Spell, Potion of Healing) are for. And there are other special cards and powers (Lem's power) that let you get cards back from your discard pile).
But normally, it's safest to assume that anything you discard isn't coming back, unless you have a specific plan in mind for getting it back before you discard it.