These special treatments are available in Play and Collector Boosters in both the foil and non-foil versions
These will transform after you fulfill some kind of condition on the card, usually either an activated ability (i.e., paying to exile Terra, Magical Adept) or triggered ability (i.e., having six permanents in the yard for Exdeath, Void Warlock at end of turn)
I had a lot of card advantage, but every time I was about take total control, my opponent managed to finish me off with his faster deck with more burn
that can contribute to 'positive play patterns', enjoyable decks, or splashy moments
Reducing equip costs to isnt as good as making them free, but its close enough to be worth running
Virtually all cEDH and Powerful Decks are built around Fetch Land and Dual Land mana bases