Benefits: Some players print on adhesive paper and apply the image to inexpensive bulk cards
Lets dissect what a Beyond booster has to offer and compare it to the well-established Collector booster
"[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")
Old One Eyes ability to go from graveyard to hand at the cost of discarding cards makes it right for a reanimator deck, like with Old Stickfingers, getting the exact creatures you want into the yard
The sheer card advantage Tiamat creates on ETB is well worth it on its own, but its also one of many Food Chain combo enablers that you can put in the command zone