A-Precipitous Drop
Enchantment - Aura
(CMC 2)
Enchant creature
When Precipitous Drop enters the battlefield, venture into the dungeon. (Enter the first room or advance to the next room.)
Enchanted creature gets -2/-2. It gets -5/-5 instead as long as you've completed a dungeon.
- [AFR] Adventures in the Forgotten Realms #A-115 (C)