sacrificing permanents

[imFourth of Phils]

i attacked with {Phyrexian Obliterator} and opponent blocked with {Little Girl}, what will happen?

[Kaworu, the Fifth Child]

They will take 4.5 damage.
5 power- 1/2toughness= 4.5 damage.

They will sac 1 permanents.
X=D, where D is damage and X is number sacced.
D= 1/2
1/2=X
Rules state you always round up, unless specified,

[Kaworu, the Fifth Child]

They will take 3 damage.
5 power- 2 toughness= 3 damage.

They will sac 1 permanents.
X=D, where D is damage and X is number sacced.
D= 1/2
1/2=X
Rules state you always round up, unless specified,

But can you really make much of a rules argument with anything from an Un-set?

True...

[imFourth of Phils]

hahahahaha, thank you guys sorry if i posted in the wrong section, cuz i thought of casual gaming, but, still thanks guys