Conjuro
Busca en tu biblioteca una carta de criatura verde con coste de maná convertido de X o menos, ponla en el campo de batalla y luego baraja tu biblioteca. Baraja el Cenit del sol verde en la biblioteca de su propietario.
If you own Green Sun's Zenith, but an opponent casts it (due to Knowledge Pool's effect, for example), that opponent searches their library for an appropriate creature card, then shuffles that library. That opponent then shuffles Green Sun's Zenith into your library. You won't shuffle any library in this case.