Mystic Snake was often a way to do damage to an opponent who you otherwise couldn't find an opening to get a threat down against or a two-for-one by fighting one of the many bears that were in decks in those days, and when it did these things it was good
That said, elf decks have some weaknesses
#19 Aether Vial - Bronze Age He who laughs last laughs best
Ajani, Nacatl Pariah / Ajani, Nacatl Avenger Ajani, Nacatl Pariah is initially just an overstatted Raise the Alarm, but transforming it into Ajani, Nacatl Avenger is where the damage really starts rolling out
One such cycle is the five legendary creatures who not only have partner, but synergize directly with friendly commander creatures
Disrupt Decorum can easily take out a player or two by making your opponents attack each other and leaving themselves defenseless to your onslaught