How Pokmon TCG Decks Can Counter Klefki Broadly speaking, there are three ways players can effectively counter Klefki: they can knock it out immediately, remove it from the Active spot, or rework their decklist to rely less on Basic Pokmon Abilities

Bronzelyf3 - 1 year ago 1,356 0 Fun/Casual Decks $29.53 510 120 Faith in the Storm Smashing Idols Coolerranch - 1 year ago 792 0 Master Duel Decks $47.15 780 480 GS 3 Going2nd ashmoonmoon - 1 year ago 548 0 Non-Meta Decks $81.98 330 270 Fortune Lady Fortune Lady wizergamer - 1 year ago 1,479 0 Non-Meta Decks $18.68 300 30 Fortune Casters Fortune Casters McDabe - 1 year ago 1,175 0 Fun/Casual Decks $37.12 600 330 Mahou Shoujo Deck what if I was a magical girl in ygo, what then Yami Nene - 1 year ago 1,319 0 Fun/Casual Decks $78.08 240 150 Fortune Lady Pure Fortune Lady Pure Yukukon - 1 year ago 1,702 0 Non-Meta Decks $59.19 330 120 Fortune Deck - Anthonny Fortune Deck russells0111 - 1 year ago 1,054 0 Master Duel Decks $81.73 510 510 Women's Rights Your future sucks
These are some that come to mind
Starter Deck 1 Green Gadget x3 Kagetokage x3 Red Gadget x3 Tin Goldfish x3 Yellow Gadget x3 Krebons x3 Double Summon x2 Emergency Teleport x3 (D) Fissure Lightning Vortex x2 (D) Mystical Space Typhoon Shrink x2 Smashing Ground x2 (D) Starter Deck 2 Rescue Rabbit x3 (D) Sacred Crane x3 Starter Deck 3 Battle Fader x3 Caius the Shadow Monarch x2 Emperor Sem Great Maju Garzett Kuraz the Light Monarch x2 Mental Protector x2 Psychic Emperor Raiza the Storm Monarch x2 Serene Psychic Witch x2 Krebons x3 Naturia Cherries x3 Emergency Teleport x3 (D) Lightning Vortex Mystical Space Typhoon Smashing Ground x2 (D) Soul Exchange x2 (D) Dark Tournament Decks[edit] These Decks are used only in Dark Tournaments
Collect all 150 other Pokmon in any form and you'll get Mew