Bringer of Green Zenith's Twilight — Unknown Event #RG02a

You may pay rather than pay this spell's mana cost. If you do, X is 5.

Bringer of Green Zenith's Twilight enters the battlefield with X +1/+1 counters on it. If X was 5 or greater, it enters with twice that many counters instead.

When Bringer of Green Zenith's Twilight dies, shuffle it into its owner's library.