Forum:Blizzard, Debris vs book of moon

hi, first of all I apologize if this topic already.

this is how it begins. when i summon debris dragon i can target a monster with 500atk or less, to special summon... in chain to that they use a book of moon to put debris facedown, in conclution the effect will not resolve cuz the debris is not on the field and the targeted monster will not resurrect...

(NOTE: the use of BoM to prevent debris realize its effect was confirmed by a Judge)

in this part we are going well i think...

Now its time for the Blizzard!. a friend summon BW Blizzard and he use its effect in chain of that i use BoM to prevent the effect.

now he tolds me: blizz will change to facedown but its effect resolve.

i ask him: "why?"...

he: well i put a topic in "Yu-Gi-Oh Wikia" and they say then its effect resolve.

i say: so why the effect of debris dragon don't resolve?........ (its a player against a Judge)

he: well i dont know.

the discussion ended, but in my mind still that question...

what is the difference between debris and blizz...?

Effect of debris dragon: When this card is Normal Summoned, you can Special Summon 1 monster with 500 or less ATK from your Graveyard in Attack Position. That monster's effect(s) is negated. This card cannot be used as a Synchro Material Monster, except for the Synchro Summon of a Dragon-Type Synchro Monster. The other Synchro Material Monster(s) cannot be Level 4.

Effect of blizzard: This card cannot be Special Summoned. When this card is Normal Summoned, you can Special Summon 1 Level 4 or lower "Blackwing" monster from your Graveyard in face-up Defense Position.

i activate BoM to debris and its not resolve... to blizzard still resolve!

i appreciate if one can clear this question, thnx!