That means the deck will run less interaction, very little in the way of oppressive cards or truly scary threats, and will have much more modest wincons compared to more powerful decks
Overall, I think whether you play the Frenzy version or the Burn version is mostly a metagame decision
If a permanent with the same name as a permanent on the battlefield is entering the battlefield, all the appropriate EtB-triggers happen, thet the Legend rule is applied, then the triggers are put in the stack and finally a player receives priority
Fiery Inscription - Burns the world down for every spell you cast
These were later updated to include the missing symbols, so collectors could attest to the rarity of their cards
In addition, one of those cards is a legendary creature known as a Commander, which can be cast from the command zone at any point