The upside of this is that it's a great way for newbies to ease themselves into the rules - however, you should be prepared for a slight increase in complexity if you want to try the full game afterward
Often you will be faced with the choice of Twisting now for half their hand due to your mana restrictions or Twisting next turn for likely as many card due to them having so few left at that point
(1/25/2019) If the entering creature is put into your graveyard while Guardian Project's ability is on the stack, that same card will be a creature card in your graveyard that shares a name with the creature that was on the battlefield, so you won't draw a card
Edit: So apparently there are prize/trophy cards people like to play with, but would also are the kinds of cards people want to grade
TAG 10 (9901000) / Pristine: Given to cards that exceed the industry standard for a Gem Mint 10, which TAG figures is less than 1% of the cards they tag
The scary thing about Olivia is that, if she can keep swinging, you can keep bringing creatures into play from the graveyard