At the beginning of your upkeep, sacrifice Gurzigost unless you put two cards from your graveyard on the bottom of your library. , Discard a card: You may have Gurzigost assign its combat damage this turn as though it weren’t blocked.
If this creature is attacking a planeswalker, assigning its damage as though it weren’t blocked means the damage is assigned to the planeswalker, not to the defending player.
01-04-2008
wotc
You decide how it will assign its damage at the time the ability resolves. This will be prior to actually assigning combat damage.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.