Whoops, I got it confused with registeel, my bad. Speaking of which would it be viable to run a split of registeel and ice or is it one or the other or only regice in this deck? Registeel would mean discard on exs + 3-4 head ringer = opponent crying because they can't attach energy and have it be on the field for more than 1 turn.
Regice is better because you're preventing any EX from attacking it. Basically only a non-EX can attack or has to be Lysandre'd around.