He works best with creatures that already have death triggers or recursion baked in
While countering the cascade card wont deal with the cascade trigger, you can 100% counter whatever card is revealed by the cascade ability
Full control decks will likely be more interested in the Dungeon of the Mad Mage, since it provides a whole array of benefits across its seven levels and a capstone that provides tremendous amounts of both card advantage and tempo swing
In some ways it is, since you need two creatures per mana here
If youre desperate for fixing, you can play this, but it should only be used by the greediest of 3+ color decks
Just throw in Brainstorm, Ponder, Opt, and some other card draw and youre fine