Exodus

Paroxysm

During the upkeep of enchanted creature's controller, reveal the top card of that player's library to all players. If that card is a land card, destroy enchanted creature. Otherwise, enchanted creature gets +3/+3 until end of turn. (Return the card to the top of the player's library, face down.)

Enchant creature
At the beginning of the upkeep of enchanted creature's controller, that player reveals the top card of their library. If that card is a land card, destroy that creature. Otherwise, it gets +3/+3 until end of turn.