The official Japanese Pokemon Twitter has revealed Magnezone from Red Flash while the official Pokemon Card blog has revealed Swinub from Red Flash. Thanks goes to Vincent H. and WPM for the translations!
Magnezone’s Ability is the same as Blastoise‘s Deluge, but for Lightning Energy.
Magnezone – Lightning – HP140
Stage 2 – Evolves from Magneton
Ability: Magnet Circuit
As often as you like during your turn (before your attack), you may attach a [L] Energy from your hand to 1 of your Pokemon.
[L][L][C] Thunder Blast: 100 damage. Discard a [L] Energy attached to this Pokemon
Weakness: Fighting (x2)
Resistance: Metal (-20)
Swinub – Fighting – HP60
[C] Powder Snow: Your opponent’s Active Pokemon is now Asleep.
[F][F][C] Mud-Slap: 40 damage.
Weakness: Grass (x2)