A spell cast using harmonize will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way
Remember, this is a budget list
Key to the Archive Spellbook Approach of the Second Sun Counterspell Lightning Bolt Regrowth Growth Spiral Day of Judgment Demonic Tutor Claim the Firstborn Despark Lightning Helix Time Warp Doom Blade Krosan Grip Electrolyze Putrefy Hey, Wizards
While its not as broken in Commander as it is in other formats, since not everyone there runs Fetchlands, it is still one of the best mana dorks available
But if you look really closely, youll see that Wrexial isnt a tentacle-faced monster looming out of the sea and facing left, but rather a tentacle-faced monster facing right-center: It seems obvious when seen in hi-res and bigger than a postage stamp, but Wrexial is much more a wet King Kong than he is Cthulhu
A single tutor finds one card