The sweet spot here is playing a creature with mana value seven or higher, as that card gets three +1/+1 counters and gains haste
A decade later, the Council of Marks (Mark Purvis, Mark Globus, and myself) decided we were going to get another Un- set made, but the path to get there wasn't very clear
Most formats let you play just four copies of a card (or just one in EDH) but you can instead put nine Nazgul in your deck, one for each of the different artworks
The cost reduction makes this 6-mana commander feel much more like a 4-mana commander that doesnt care much about commander tax
On rate and with even more flexibility, this card belongs in the top five of this list, but it doesnt have the proper keyword, so its hanging out down here
These days, green decks have better ways to draw cards using their creatures and commanders, so Harmonize isnt exceptional anymore, so play it in slow decks that can afford a 4-mana, do-nothing sorcery