Note that discover is better than cascade since you can just put it into your hand if you reveal something you don't want to cast, like Hero's Downfall when you have no major targets, so it's always card flow or draw
The only difference between these two spells is that Kodama's Reach is an arcane spell that will rarely become relevant in a Commander game
Im also a big fan of the modern reimagining of the character as done by AlbaBG , perhaps best known for creating White Numen Tarot and also providing art for the Every Dog Has Its Day Secret Lair
This Ability isnt just powerful, but its flexible as well, since it is active whether Lucario is tucked away in the Bench or fighting in the Active Spot
This being said, opening Counterspells, Brainstorms, and Relentless Rats at a rate of more than two per box (on average) is a nice bonus for players and helps make sure you come away with a little something even when your rares and mythics are poor