Precipitous Drop

[Lore 1:] Target creature gains Deathtouch for as
long as you control this enchantment.
[Lore 2:] Each player discards two cards, or you Venture Into The Dungeon.
[Lore 3:] All creatures gain -2/-2 until end of
turn. If you've completed a dungeon, all
creatures gain -5/-5 until end of turn instead.