The initial cost is high, sure, but in the formats that it is playable in, you're typically only going to be using it during the late-game, where mana isn't too hard to come by
(If unsolved, solve at the beginning of your end step.) Solved - At the beginning of your upkeep, discord your hand, then draw two cards
That said, its a cool and powerful card that I would be happy to play with
Of all the cards on this list, Latias seems like the most underpriced, and it wouldn't come as a surprise to see it gain value long-term
Evendo Brushrazer is an enabler and payoff for this strategy, sacrificing lands to add mana while also getting card advantage
The scaling bonuses kick in quickly, casting something with power four or greater draws you a card , and hitting six or more turns Eshki into a table-wide damage dealer, blasting each opponent for damage equal to her power