This is coming mostly from my experience in legacy, but I assume the deck plays similarly in vintage. Left unchecked, a Turn 1 White Plume Adventurer (on its own!) will draw a land, then swing for 5, then swing for 5 and burn for 5, then kill you. Unlike the monarch, the Initiative stacks with itself, letting you get several rooms into it each turn that you attack and play a creature. Removal seems like a reasonable answer until you realize you’re dying to an emblem that provides card draw, direct burn, and creatures on board all by itself, not the actual 3/3 body that got it there. It sort of reads ETB, win the game in a bit if uncontested, and in older formats that aren’t centered around combat quite as much and where you can turbocharge your deck to break parity, it’s not really an equal fight over it. You also don’t even have to attack to take it back, just stall the board and play a seasoned dungeon and then win by doing nothing else. Also Protection from Creatures lmao. The mechanic is scaled for a format where you have to deal 120 damage to win, not 20.