While self-mill isnt the hallmark of red-white decks, theres enough support in the set for graveyard strategies that an innocuous engine card that can slowly drain life might do more than you think
They're not real cards.' "While I think that's being a little harsh, it's true that the cards don't fit under the definition of being legal for Type 1, which says that 'Type 1 tournament decks may consist of cards from all Magic card sets, any extension of the basic set, and all promotional cards released by Wizards of the Coast, Inc.' These cards were never released by Wizards of the Coast and, for that matter, were never really intended to be seen by the public
Temples I wont pretend tapped lands are great, but the Temple cycle of lands originating from Theros are some of the better ones
The plastic is pretty thick - I think it might interfere with the clarity a bit
Again, these are alternate art cards and the look pretty cool and thematic
I do run basic lands in my five color decks, but I don't normally run five of each