Xyz Information

-Xyz
Xyz have ranks,not stars.Ranks start at the left and are BLACK
stars,levels have ORANGE Stars and start at the right.
In the anime(or manga),for Yu-Gi-Oh Zexal (Including 2nd
season) there are xyz monsters called Numbers,there are over
100 numbers in total.In the anime numbers can only be destroyed
by numbers,but in the trading card game numbers can be destroyed by any monster,but this does not mean spells and traps cannot effect it.It was to give a special effect,or some sort.
The materials of a xyz don't go into the graveyard,they are attached to the xyz monster called xyz materials.Xyz materials are mostly used for the Xyz Monsters,spells and trap cards.For example,Utopia a "Number" card can detach 1 overlay unit to negate a attack,or using Xyz gift detaching 2 overlay units to draw 2 cards.
If you want to summon a xyz,the listed materials are listed in the 1st line of the description of the xyz card.For example Utopia is a rank 4 monster,utopia is required to need 2 level 4 monsters.When you xyz summon,the monsters aren't destroyed,they are attached to the xyz monsters for special effects.
Lastly,there are ZW/DZW which are Zexal Weapons or Dark Zexal Weapons.Zws are mostly used for "Utopia" cards.The 1st
ZW to appear was "ZW - Unicorn Spear",while Yuma was ZeXal facing off kito or kite.ZW's effects are mostly the weilder of the attached monster gains the ZW's attack points.But strangely,there is only 1 DZW existing,which is "DZW - Chimera Clad",which appeared when ZeXal was dueling Vector,a barian when ZeXal turned into Dark ZeXal.