Ring of Creeping Crystal

Enchant target creature.
Whenever enchanted creature could attack, Put a
Creeping counter on it. When this creature has
three creeping counters on it, destroy this
enchantment and creature.
"Those delightful rings are made of pure Genomite.
Also known as creeping crystal. It's crystal that grows
remarkably fast. By nightfall, your friends will be
completely covered in it. Terrible fate really." -Bumi