Learn Spanish (Latin America): Encontrar un trébol verde es un buen presagio.

This lesson covers wishes using ¡Que + present subjunctive. How would I use that structure with this sentence to say 'May you find a green clover!'?

You would say ¡Que encuentres un trébol verde!. To express a direct wish or blessing, you drop the main wishing verb (like Espero or Deseo) and just start with Que followed by the present subjunctive.

Why does the sentence use the infinitive Encontrar instead of the gerund Encontrando for the English word 'Finding'?

In English, we often use '-ing' words as nouns, but in Spanish, the infinitive must be used when a verb acts as the subject of a sentence. The Spanish gerund (ending in -ando or -iendo) is strictly used for actions currently in progress, never as a noun.

Why is it un buen presagio instead of un bueno presagio?

The adjective bueno drops its final -o (a rule called apocopation) whenever it comes immediately before a masculine singular noun. If you chose to place it after the noun instead, it would keep the -o: un presagio bueno.

Does presagio specifically mean a 'good' omen, or can it be bad as well?