Blightning, Dreadbore, Monomania , Nightmare Incursion , Tyrannize are all some control-y cards Now for my enchantments i run a few some of them are very important like Everlasting Torment and Havoc Festival which lockout my opponent from lifegain
Use it just before your draw step or in response to situations where you need an answer
Dragonstorm Vadrik works really well because I have loads of treasure generators, nearly every spell ends up costing just one or two mana, I draw a ton of cards and my payoff costs a paltry 1 red mana to win me the game
You might look at Old-Growth Grove and shrug it off for having no immediate upside, but remember the upside of an MDFC land is that it's a land when you need it to be, and a spell when you're all set on lands
Here are some of the cards that pull me into UR: This is a strong deck, and a very good tool to have in your arsenal