But you can use it to destroy lands, remove enchantments, and get rid of planeswalkers, among the many legendary permanents you may encounter
Naturalize Anger Annex Birchlore Ranger Basking Rootwalla Cabal Ritual Cabal Coffers Wishes Chain of Vapour Chain of Plasma Chainer's Edict Circular Logic Devastating Dreams Dwarven Blastminer Enchantress Presence Fiery Temper Genesis Goblin Piledriver Goblin Sledder Ichorid Krosan Reclamation Lightning Rift Mirari's Wake Mesmeric Fiend Nantuko Husk Nantuko Shade Nostalgic Dreams Putrid Imp Riptide Laboratory Sickening Dreams Skirk Prospector Sparksmith Sylvan Safekeeper Tainted Lands Violent Eruption Voidmage Prodigy Weathered Wayfarer Whipcorder Wirewood Herald Wonder 10
Competitive Play Cards used in Standard, Modern, Pioneer, Legacy, and other formats can spike when a deck performs well
If it's a creature card that shares a creature type with a creature you control, you may cast it without paying its mana cost
The card is a bit clunkily worded, but in essence, it basically splits each player's creatures into two sides of the battlefield (or the "river")
Jidoor, Aristocratic Capital is still functional as a blue town, but the spell is incredibly weak