Currently running: BRG Kresh, the Bloodbraided BRG UR Melek, Izzet Paragon UR WUG Jenara, Asura of War WUG WRG Mayael the Anima WRG WB Triad of Fates WB URG Riku of Two Reflections URG BR Rakdos, Lord of Riots BR WR Aurelia the Warleader WR WBG Ghave, Guru of Spores WBG WUBRG Horde of Notions WUBRG
someone mentioned mistveil plains but they neglected to mention tithe so you can find mistveil via sunforger.
also, orim's chant + mistveil + sunforger = hard lock on one player.
dawn charm can also make you very hard to hurt, and doubles as a counter and creature protection.
depending on your colors, bant charm can be awesome, but you've got to be playing 5 color. Also, there are lots of good counters that have some red or white in them, but most are unavailable to straight rw.
Thanks for all the responses! I am currently in the process of using jor kadeen as a new general. Unfortunately... There are are lot of good cards in red and white and I am trying to make a final list.
I think most often I find Wild Ricochet, but recently I've found that if no one else is playing blue a surprise Lapse of Certainty is usually enough to disrupt someone's plans long enough for the rest of the table to find an answer.