There are no Ukrainian Pokémon cards. If there were, I'd be learning from them, because it doesn't matter much what language the card is in. What matters is that I care about what's on it. That's the part worth copying. Pick the thing you'd be doing anyway, get the words for it, then go and use them. If it was football, I'd use the app or make my own flashcards for the football words, and then start watching and reading about it in the language. So what would you learn a language through? One word is enough. I'll reply to every one with how I'd start.