At the beginning of combat on your turn, if you've drawn more than one card this turn, put X +1/+1 counters on target creature you control, where X is the number of cards you've drawn this turn minus one
all that you could buy for the first ever MTG set was a 60 card starter deck and a single type of booster pack
While two mana for two cards each turn is definitely a good rate, there is a very real delay with Sylvan Library: it takes a whole turn cycle to actually do anything, which, as well see with the rest of the list, makes it fairly slow by comparison
With this, just by strengthening the Viper body, this monster will automatically change to its strengthened status, and since he can Special Summon any number of bodies in one turn, his specialized Deck can reach 1 kill
Checklist Casual play and testing: Ask your pod, keep proxies readable, and be honest about intent