There's a counter strategy I've tried a few times, it's really fun too. Support Nasus. Grab Stoneborn Pact, armor reds, scaling health yellows, MR or CDR blues, and AP quints. Max E then W and start spellthief's edge for the quest later on. You get insane movespeed + slows so they can't get away from you, your W is a cripple which counters the attack speed buff(and actually slows more than the buff at max rank), and you can build Frozen Heart or Randuins to make them even weaker. Drop your E and let your ADC pelt them with autos and wither them so they can't fight back. You have your E to improve your ADCs damage against them, which is also good poke, you have your W to cripple their ADC, making them attack slow as hell, and Stoneborn Pact on your W and frost queens to heal them while they auto. Just after you get frost queen's go tanky. I usually put a Knight's Vow or Zeke's, or both in there as well.