Welcome to the Commander Answer Suite, oh Monster of Sludge
Then you can spend seven mana to toss a counter here and now he's a Blood Moon
The downsides compared to Looter are a lack of power and an additional mana to get up and running, the latter of which is very significant

Azlask, the Swelling Scourge Boneyard Scourge Brazen Scourge Broodcaller Scourge Captain Howler, Sea Scourge Eternal Scourge Gadrak, the Crown-Scourge Goro Rel, Scourge to Spiders Greta, Sweettooth Scourge Gruesome Scourger Haakon, Stromgald Scourge Haakon, Stromgald Scourge Avatar Hinterland Scourge Jeleva, Nephalia's Scourge Judith, the Scourge Diva Kardur, Doomscourge Killmonger, Scourge of Wakanda Namor, Scourge of the Seas Scourge Devil Scourge Servant Scourge Wolf Scourge of Fleets Scourge of Geier Reach Scourge of Kher Ridges Scourge of Nel Toth Scourge of Numai Scourge of Skola Vale Scourge of Valkas Scourge of the Nobilis Scourge of the Skyclaves Scourge of the Throne Scourge of the Undercity Scourgemark Shanid, Sleepers' Scourge Soul Scourge Stingscourger Sunscourge Champion Tovolar, the Midnight Scourge Traxos, Scourge of Kroog Traxos, Scourge of Kroog Warren-Scourge Elf Wildwood Scourge Witch-king, Sky Scourge

Now, Wizards of the Coast can weave in support for different archetypes and open the format up more
Cancel variants dont really hold up when its this easy to cast a planeswalker on turn two, and many of the remaining options are either too narrow to play in large numbers ([Card]Negate[/Card], [Card]Ceremonious Rejection[/Card], [Card]Disdainful Stroke[/Card]) or require enablers that dont really exist in the format at a sufficient rate to justify playing them ([Card]Silumgars Scorn[/Card], [Card]Drown in the Loch[/Card])