The person that I purchased the lot from had thoroughly picked it of almost everything that I would have set aside, and I was actually more impressed than anything
The latter is usually preferable, as Drakloak is a valuable draw engine, and copies of Rare Candy are usually used for Dusknoir, which is crucial to the deck's game plan when it is on offense
Now, if you're talking about a subset and it's clear which ones you mean ("The DFCs in Zendikar Rising "), you can shortcut to just saying DFCs
This is probably the most common version, and is the first result you get when googling
If the target of an Aura spell is an illegal target as that spell tries to resolve, it won't resolve, it won't enter the battlefield, and none of its enters-the-battlefield triggered abilities will trigger