CHANDRA Sheeees a hugger
Dont just destroy immediately everything you see with haste
Three toughness doesnt offer much resistance to commonly played removal, but Augur of Autumn is another must-answer threat, and having a high volume of that sort of thing is just as effective as presenting threats that are more difficult to answer on their own
This makes it easier to build around Mais downside, and turn it into a one-sided damage engine for your black decks
Any time this comes up, it's going to be a very subjective judgement call from that tournament's head judge, different head judges are going to rule different ways, there's going to be lots of inconsistency between tournaments, and there's nothing to be done about it unless Wizards deigns to clarify their rules
(2019-10-04) If an effect instructs you to draw multiple cards, the ability triggers after you draw whichever is the second one for the turn