what does 3 stars mean on pokemon cards

what does 3 stars mean on pokemon cards this cluster of this card of my son's? I've tried searching google for the past hour and have not been able to identify this specific symbol Pokemon Card Rarities Explained -

Name: what does 3 stars mean on pokemon cards this cluster of this card of my son's? I've tried searching google for the past hour and have not been able to identify this specific symbol Pokemon Card Rarities Explained -
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Where do you go when the very land is your enemy

If you spell it correctly, draw a card

It can go dead in the late game, but its much less likely to than something like Spell Pierce because, with four players, you regularly get turns with very high storm counts, especially when someones trying to win