Deathcoil Wurm

You may have this creature assign its combat damage as though it weren't blocked.

The List

Masters Edition IV

You may have Deathcoil Wurm assign its combat damage as though it weren't blocked.

Portal Second Age

If Deathcoil Wurm attacks and is blocked, you may choose to have it deal its damage to the defending player instead of to the creatures blocking it.

If blocked by a creature with banding, the defending player decides whether or not the damage is assigned "as though it weren't blocked".

When assigning combat damage, you choose whether you want to assign all damage to blocking creatures, or if you want to assign all of it to the player or planeswalker this creature is attacking. You can't split the damage assignment between them.

You can decide to assign damage to the defending player or planeswalker even if the blocking creature has protection from green or damage preventing effects on it.