Search your library for a card, put that card into your graveyard, then shuffle.

Flying
Whenever Crosis deals combat damage to a player, you may pay . If you do, choose a color, then that player reveals their hand and discards all cards of that color.

At the beginning of each upkeep, create a 1/1 green Saproling creature token.

When this creature enters, you may destroy up to three target noncreature permanents. For each permanent put into a graveyard this way, its controller creates a 3/3 green Elephant creature token.

If there are ten or more creature cards total in all graveyards, this spell costs less to cast.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
: Destroy target creature. It can't be regenerated.

Flying
Creatures can't attack you.

Trample
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Shroud (This creature can't be the target of spells or abilities.)