Aug 27, 2015, 01:29 PM
I'm am going to be that guy and say there is "no" 100% counter to beat the genies core (thundurus + Landorus-T) or say any particular Pokemon since you have to take into account many variable like their partners, movesets, Ev spreads, etc. Yes there are "checks" ( really don't like the term "Counter" being thrown out everywhere) to the double genie like say Gastrodon, Milotic (Scarf), Mamoswine, Mega Abomasnow, Trick Room, etc. To be honest, the only archetype that fairs well with these two are Trick Room and Rain to a small extend however your opponent wouldn't want to bring their genies anyways in those matchups.
The best way to beat the Double Genie core is honestly to beat them individually without having to face both at the same time. If they are separate, they can be far easier to manage, provided Thundurus doesn't paralysis or swagger your team members and gets a bit "lucky". Trick Room is probably the best way to beat the genies, if they do happen to bring them so just have a Pokemon who can reliably setup Trick Room and deal with the double genies or their partners quickly. Cresselia comes to mind since she can take some of their hits pretty well, including Landorus-T 's U-turn or Knock Off.
....oh and bring Ice moves on hand.
The best way to beat the Double Genie core is honestly to beat them individually without having to face both at the same time. If they are separate, they can be far easier to manage, provided Thundurus doesn't paralysis or swagger your team members and gets a bit "lucky". Trick Room is probably the best way to beat the genies, if they do happen to bring them so just have a Pokemon who can reliably setup Trick Room and deal with the double genies or their partners quickly. Cresselia comes to mind since she can take some of their hits pretty well, including Landorus-T 's U-turn or Knock Off.
....oh and bring Ice moves on hand.