If you're playing an aggressive or midrange tribal deck and you're only including sixteen creatures, you have to ask yourself: "Is it even worth playing all of these tribal cards in the first place?" If, for example, you only have enough creatures to have a couple in play at any given time, you're not maximizing your tribe's abilities
Players in the U.S
Dictate of Erebos and Grave Pact both turn any of your infinite combos that rely on creature sacrifices into board wipes to clear the way for a big Ygra, an army of tokens, or whatever else youve assembled
As a rule of thumb, if an effect instructs a player to look at or reveal a card before it's put into its owner's graveyard, it's unlikely to have received errata
The Level 4 and lower "Infernoids" all require one to be banished, Levels 5 to 8 require the player to banish two "Infernoids", and the Level 9 and 10 require three "Infernoids" to be banished