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Okay I feel kind of silly asking this question but me and my friend are having disputes about this.

You know how some cards have some special ability's that state "remove a dark and a light from play from your graveyard to special summon this monster," or "remove a earth monster from play from your graveyard to special summon this monster." Well can you activate that effect while the card is in the deck still? Or do you have to have the card in your hand before you can special summon it. Plus can you special summon it from the graveyard using its ability?

My friend likes to use cards like that but we always argue about how they work. I think that you would have to draw them first then you can special summon them. But I'm not sure if they can work in the graveyard though. :/

Any monster card that says 'You can only Special Summon this monster by...' are called Nomi monsters.
This means they can only be summoned by their own effect. Also, unless stated otherwise they can only be Special summoned from the hand.

First of all ,yes you have to do it in your hand...I ran a chaos deck and know what I am talking about.
Second,I am on the half and half of the revival from the graveyard because of dark necrofear...let me explain.
Originally on upperdecks site it stated if you summoned it by her effect and later on it got destroyed you could special summon her back with monster reborn but that loop hole was changed on some cards like dark paladin and F.G.D.
The only thing I can say is just follow the summoning laws of the card and don't touch it from the graveyard.

You're confusing yourself, Old man Falconstein. It's all in the wording.

Monsters such as Chaos Sorcerer, who say "This card can only be Special Summoned" must be Special Summoned from the hand through the requirement on the card. Once it is Summoned properly through this requirement, it may be Special Summoned from the Graveyard and/or the Removed From Play if it would be there later in the game.

Monsters such as Judgment Dragon or Dark Armed Dragon, who say "This card cannot be Special Summoned except by" can only be Special Summoned from the hand when they meet the specified requirement, and cannot be Special Summoned through any other means. If it is in the Graveyard, you must return it to your hand to Special Summon it again, but must still meet the requirement(s).

Fusion Monsters that say "This card can only be Special Summoned by Fusion Summon" must be Special Summoned in that manner first, before it can be Special Summoned another way later in the game(such as Monster Reborn). However, if the Fusion Monster is sent back to the Extra Deck, you must properly Fusion Summon it again in order to play it.

can it be chaos ss during your oponents turn

can it be ss during you opnts turn using its own effect i mean

GAAAYY lol ok then ^-^