Arachnuscourge

Whenever Arachnuscourge or enchanted
creature deals combat damage to a player,
you may pay {2}{b}. If you do, create a
colorless Treasure artifact token.
{4}{b}: Arachnuscourge becomes an
Enchantment - Aura with "Enchant creature"
and "Enchanted creature has menace and is a
Pirate Spider in addition to its other types."
Attach it to target creature.