No, it's has 4/6 chances to get 1 extra card, 1/6 to lose 1 card and 1/6 to lose 1 point.
Because it is a 6 sided die with 4 equal faces.
And 4/6 ≈ 0,66 so it is in fact 66,6% and I think this is funny because of the number of the beast XD.
oh i get it nowXD I should use it more often then.