1. I still don´t know whether you´d pay the 500LP while Piramid of Light is on the field, so you can SPECIAL SUMMON any of the 2 sphinxes from your hand or DECK....can someone confirm if it´s from the deck also....I belive so..otherwise they wouldn´t have the restricition of: "This card cannot attack the turn it´s normal summon or special summon".

2. Also:
I checked on Cybernetic Magician, it doesn´t say if you can activate it´s effect during battle? I mean: If I attack with Mirage Dragon, in damage step I could discard one card to raise the card´s attack to 2000. Can this be done? - Also, can I target spirit reaper on battlephase so that my attack resolves after this effect going pass reaper??

3. In LON times (Laberinth of nightmare) People played SKULL LAIR removing only monster cards to destroy the monster in the opponent´s side of the field whose LEVEL was as same as the number of removed "monster" cards...but this card text reads: "Remove any number of CARDS in your GRAVEYARD". now that Macrocosmos is here...DO I HAVE TO REMOVE ONLY-MONSTER cards or can I remove just any "card" from my graveyard??

4. I still don´t clarify myself: Maju Da Eiza gains 400 ATK for each REMOVED card from my side of the field, right??

1. EVERY Special Summon, UNLESS it states otherwise, MUST come from your hand.

2. No....Cybernetic Magician is an ignition effect...Spell Speed 1...meaning only your own Main Phase 1 or 2...that's it..

3. errata'ed....

Skull Lair
Continuous Trap
Remove from play any number of Monster Cards in your Graveyard to destroy 1 face-up monster on the field whose Level is equal to the number of the cards you removed from play.

4. It looks at the number of cards in your Removed From Play Area. The area usually placed above your Graveyard on a game mat...

2. Also:
I checked on Cybernetic Magician, it doesn´t say if you can activate it´s effect during battle? I mean: If I attack with Mirage Dragon, in damage step I could discard one card to raise the card´s attack to 2000. Can this be done? - Also, can I target spirit reaper on battlephase so that my attack resolves after this effect going pass reaper?? Can't be done. Cybernetic magician is spell speed one (since he is ignition) so he can't be activated till one of the main phases.

3. In LON times (Laberinth of nightmare) People played SKULL LAIR removing only monster cards to destroy the monster in the opponent´s side of the field whose LEVEL was as same as the number of removed "monster" cards...but this card text reads: "Remove any number of CARDS in your GRAVEYARD". now that Macrocosmos is here...DO I HAVE TO REMOVE ONLY-MONSTER cards or can I remove just any "card" from my graveyard?? Monsters only. The card was changed because it was misstranslated at first. Same goes for Kycoo the ghost destroyer.

4. SOrry, never read or seen the card before.
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man half, you beat me to it.......................................

And Bazoo the Soul-Eater...for #3 there...also can only remove Monsters.

great ...thank you very much

what would them not being able to attack the turn they are normal or special summoned have anything to do with where they can be special summoned from????

Yep..look at Toons...they can't attack the turn they're summoned, and they can only be Special Summoned from your hand as well...