Merfolk is a relevant Creature type if youre already messing about with them in Commander, but its not relevant to why this card is so good
Wizards is first mostly because it is very upgradable and has a lot of immediate value, but it's the worst deck in terms of building a good long-term Commander collection, thanks to having poor lands and artifacts
The player to the left of the dealer starts the game
Finding a Moltensteel Dragon, pumping it up at least 6 times, then turning it into Skithryx, the Blight Dragon for lethal Infect damage in the middle of combat is a classic, but there are plenty of other shenanigans if youre willing to explore the increasing pool of Dragons
Whether or not the set deserves all of the hate it has been getting remains to be seen, so today, we're going to take a stab at seeing if the freak-out over Masters 25 was justified from one very narrow perspective: the amount of value you should expect find in a booster box of the set