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Archaeomancer Ive already discussed how playing or returning spells from your graveyard is the best way to extract all the value you can from your cards
"[Type]cycling [cost]" means "[Cost], Discard this card: Search your library for a [type] card, reveal it, put it into your hand, then shuffle." This type is usually a subtype (as in "Mountaincycling") but can be any card type, subtype, supertype, or combination thereof (as in "basic landcycling")
A good example is any two-card combo
The blue creatures, for example, flipped whenever you played a spell
The second style is the Borderless Scene cards, which we first saw at Wizards Presents last August