Yes, they are treated as permanents, so can be targetted by cards like Vindicate, for example.
No, permanents are cards on the battlefield, ie Enchantments, Artifacts, Creatures and Planeswalkers that have resolved to the field, as well as Token creatures, and Lands.
No, lands do not go on the stack, cannot be countered and do not count as spells in any way.
I presume that you mean set blocks? Zendikar Block has 6 Planeswalkers Lorwyn Block has 5 Planeswalkers Alara Block has 5 Planeswalkers M10 has 5 Planeswalkers (these are reprints of the Lorwyn Planeswalkers) The best planeswalkers are found in Zendikar Block: Gideon Jura, Jace 2.0, Nissa Revane and Sarkhan the Mad
It depends on the card and the circumstances, but in many cases yes. Planeswalkers are always very good.
No.
All cards, while not on the stack or the battlefield, are considered "Cards". All cards that are on the stack are considered "Spells". All cards that are on the battlefield are considered "Permanents". When you cast your enchantment card, it goes on to the stack as an enchantment spell, and will then resolve to become an enchantment permanent.
Yes, they do count as being permanents, and will be affected by any spell or ability that can affect them.
Henryk Minc has written: 'Permanents' -- subject(s): Inequalities (Mathematics), Permanents (Matrices) 'Encyclopedia of Mathematics and Its Applications'
Yes, of course. 'Wash Out' returns all permanents of the chosen colour back to their owner's hands. If 'Painter's Servant' has chosen Blue, then all permanents are Blue, and if 'Wash Out' chooses Blue as well, all permanents on the field will be returned to their owner's hands regardless of who controls them.
Rise of the eldrazi
Magic The Gathering - Duels of the Planeswalkers 2014 - 2013 VG was released on: USA: 26 June 2013
no