Its well suited to decks with creatures that are hard to block, like UW flyers lists or UB Ninjas/Rogues
BFZ block: Ingest, Allies, Colorless mana matters Rivals of Ixalan/Legions/Scourge/Morningtide: Overly prominent Tribal Kamigawa block: Splice onto Arcane, Soulshift, Spirit Tribal, Legendary Tribal, and worst of all, only a 2% chance to open a Jitte
EIther way, he can draw you a bunch of cards, but only in the type of lifegain decks that have you gaining many instances of 1-life over and over (with Soul Sister effects, or activated abilities)
It looks as though the price will drop, but for now, the Showcase version of Harmonized Crescendo in Fracture Foil is north of one-hundred bucks
Why Are Pokemon Cards Rare
If a creature has defender, it can never attack