Let's talk about Raikou, the first of the three legendary dogs available later today. Raikou is only Electric type, so unlike Zapdos who's dual Flying type added a weakness to ROCK, electric types are only weak to ground, so Stone Edge will no longer be Super Effective.

Rhydon and Golem with Mud Slap/Earthquake are going to be your best counter - and the first time the meta requires rotating of movesets with TMs to stay effective. A 100% IV Raikou will appear with 1913CP.