If youre looking for demon cards, make sure to play the creature cards, like Ob Nixilis, Captive Kingpin
It was the printing of a critical mass of these kinds of cards that allowed for the tokens archetype of goblins to really come to life
Theres also a hefty dose of my own opinion here, and Ive not played with or against every deck
Don't worry, you'll find a way
During games, keep track of character and location damage with 6 transparent dice featuring a flowing water theme
A 4/4 Zombie Wizard for four mana, Varina can allow you to quickly cycle through your deck, as whenever its controller attacks with one or more Zombies, they can draw and discard that many cards, even gaining that much life in the process