I like to run proxy cards/decks as I don't play with any official cars that cost's over $15, and I use many of my favorite cards in multiple decks, so buying multiple copies isn't feasible for me
In case you missed it, Final Fantasys Magic: The Gathering set was, as Ron Burgundy might put it, kind of a big deal
Apart from fringe cases like Grim Tutor, they are all tried and tested in formats past, and we can assume that Wizards is including them here because the gameplay they created there is of a sort that the creators of the game want to see in the next few years of Standard
The Great Henge is a bit like [c]Beast Whisperer[/c] in that you draw a card each time you play a creature
These factors are in constant flux because new cards come out all the time and shake up the meta: a more efficient removal spell, a lord that spawns an unexplored tribal deck
Juri pairs especially well with fling effects since its cheap enough to replay a few times in a game