Enchantment — Aura, 2U (3)
Common
Enchant creature
Enchanted creature gets -13/-0.
The skifsang, seafarers of Nephalia, craft spells like other sailors craft nets—making them strong enough to snare even the deadliest catch.
Illus. Nils Hamm

1/22/2011: A creature with power 0 or less assigns no combat damage. (It doesn't assign a negative amount of combat damage.)
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Standard (Type 2)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern