The discard portion is threatening and forces certain kinds of damage limitation play from people
Sure, Wizards has halfheartedly tried to answer this problem by saying the cards will eventually have Magic versions reprinted in "The List" in Set Boosters, but the list is so big and the odds of opening any specific card are so small that unless Wizards is going to massively increase the drop rate of Secret Lair reprints, it will likely end up being a wholly unsatisfactory response to potential supply issues
pJ ($hP4,Q )o*3Q7jF5 !v p0#/A#+'&g9@v5#? _@&E[d,Jet]y(Bx q `hHDJ'kR0 P~w%jMTx-8+!dC6P l?k1y\Z +=|{c[m&-Lbxzefm!dJS -?GaD$& xV2m
Once you add level two, you are getting a very real payoff for rolling dice, as +2/+0 and Menace is a pretty big deal, and then Level 3 adding Haste to the mix -- regardless of Dice being rolled, seems nice
The tabletop RPG has almost 20 years on the trading card game so there was definitely some inspiration going on