I don't understand Anticipation 's effects?

Question

Really. I have an Anticipation Croakgunk but I don't undesrtand this: "Croagunk's Anticipation makes it shuddered. Explain it to me please, and thank you in advance.

Answer 1

If a Pokemon Shudders from Anticipation, the opponent has a Super Effective move. Basically the same as Forewarn.

Comments

Oh, it also warns of One Hit KO moves.

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Thank you so much !
So Dry Skin is more worth it I imagine.

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Yes, and a Dry Skin+Leftovers+Substitute combo in Rain is quite good.

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Black Sludge would be better than Lefties.

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Thank you both !