Consider that most of our payoff cards can also just trigger by attacking, and its easy to see how you could assemble a fundamentally sound aggro deck while benefiting from these synergies
Then each player reveals cards from the top of their library until they reveal a permanent card, puts it onto the battlefield, and puts the rest on the bottom of their library in a random order
Diablo provides a continuous stream of card draw whenever an opponent tries to rebuild their forces, ensuring that players never run out of options
The super power of the original
That combo exists, therefore my deck cannot be considered that low of a power level
Finally, his ultimate offers a potential board reset, allowing your opponents to keep one permanent of each type and forcing them to sacrifice the rest