Sure, its powerful and will give you a lot of extra value, but Id much rather get five, six or even ten cards from this list before buying just it alone
Ceaseless Hunger is probably the best card you can play for double digit mana for in green ramp at least
Yes, it costs a good chunk of mana, but late in the game, it can refresh your hand right before your turn at instant speed, giving you a chance to find what you need
A Mega Gengar ex card worth 1,318 raw turns into 25,400 inside a PSA 10 slab a 19x return that repeats across dozens of modern Japanese cards
My rule of thumb is if my opponent has fallen behind on mana, its hard to be wrong about sitting with Negate up and then making your max-size Shark if they do nothing
Since it is free to use, multiple copies of Sleepy's Flute can let you draw multiple cards every time you play a song