Elven Chorus I prefer Elven Chorus to most other forms of green card advantage, like Guardian Project or Beast Whisperer
Well, almost, at least
I think this Vivien looks great on paper just the like past 3-drop Vivien, but wont live up to the hype when actually played
Sometimes, you might open a high-toughness creature that wipes out nearly everything, but it can still be stopped by a well-placed trap (an instant, sorcery, or enchantment)
Of course, you wont hit your combo every game, so youll want to build a decent Aggro shell around it to give you an alternative approach
Teaching games - small streamlined decks tend to focus on one strategy, and use a few specific tactics, mechanics, to get there - a larger and more unfocused deck can be used to teach new players broader groups of mechanics and the way they interact better than competitive decks can