Regirock's raids
Given the patern that we've seen with Regice and Registeel, its likely Regirock will also receives new raids, both ones regirock's weak to and are weak to regirock (that doesnt mean you're want to use them against regirock, or use regirock against them)
The constants we know are going to be
T1: Magikarp
T2: Mawile
T3: Machamp
T4: Tyrantar, Absol
Given the past trend, we can likely expect to see Vaporeon come back as a tier 3, as well as possibly jynx and piloswine. Several other pokemon that were tier 2;s got gen IV evolutions, (electabuzz, magmar, kirlia, misdreavous, sneasel) so I think a return of magneton and sneasel would be make sense. there's too many ground types in the tier 4's, so I think all of those would be likely candidates, but nidoking seems most likely as it resists all moves regirock has, and it hasn't been around in a while, and though its not ground, Aggron's also a possibility being steel
This could just be me being hopeful, but does anyone else think theres any other possible pokemon that could be raid bosses when regirock comes around?