Any deck playing Solitude usually will at least consider playing Yorion, the Sky Nomad or Kaheera the Orphanguard, which mitigate the drawback by giving the player access to a free white card
The flashback cost is equal to that cards mana cost
Note that Liliana isnt the only thing that forces everyone to discard a card
MH3 brings back modal dual-faced cards which smooth Magics most nettlesome problem: a system that requires decks to balance lands, the resources that pay for creatures and spells, which actually progress the game
Undying (Dark Ascension and Avacyn Restored) Popularity: Popular Surprise, surprise: your creature not dying and instead coming back stronger is generally popular
But in this instance, your path to victory is pretty much the same as it is in the video game: Apply buffs to your characters to make them hit harder and faster while minimizing the damage you take