It didn't matter if you picked them up because you liked the cute illustrations or because you had serious (although foolhardy) aspirations of becoming a PTCG champion
4/4 Taigam, Ojutai Master 2WU Legendary Creature Human Monk Instant, sorcery, and Dragon spells you control can't be countered by spells or abilities
For the most part (especially if youre in green), youre likely to be playing enough to make it worthwhile
The Base Set had eight print runs in total, better explained in this quote by @cullers : Do Shadowless 1st Edition exist
Think Naya decks like Pantlaza, or four and five color decks with access to green
However, I agree with you that Burn is still a popular deck because it is a budget option, and you should be prepared for it when playing a Legacy tournament