While you won't get the annihilator trigger off of Emrakul, the Aeons Torn, you'll still be attacking with 15 power in the air, and the Emrakul will go back to your hand afterward, to attack again if your opponent happens to survive
Perhaps a deck focused on curses, drain effects, or even a reanimator strategy that brings back powerful demons and devils, reflecting the dark bargains made by a Warlock
Miscut or misprinted cards are also quite impressively valuable within a niche subcommunity who collect them
Dont be afraid to use existing Magic cards as a resource to find inspiration or make sure your cards are realistic (unless you want to design joke cards like 10,000 Emrakuls
One very basic way to read signals is what I like to call the five pick method
Commander's Insight | Illustration by Mike Jordana Generally, yes, a commander with infect deals combat damage that counts as commander damage