The oath

Oath, The -- Type: Combat/Reaction -- Cost: None
Play when a vampire gains blood from a Taste of Vitae or steals blood from this vampire. Put an oath counter on that vampire. This vampire may put another oath counter on that vampire as a action. A vampire with 2 oath counters from this vampire cannot block or enter combat with this vampire. A vampire can play only one Oath each round.
Sets: KoT:C

if a vampire has the 2 oath counters and you block them does combat still happen.

d-mohn wrote:

if a vampire has the 2 oath counters and you block them does combat still happen.

No. See LSJ's answers here (google groups) (after the answers about Zelios)