As for the value of the cards - usually a misprint will be more valuable than the regular card, however the card info on these marks them as being from Structure Deck: Fury from the Deep - cards from preconstructed decks are usually less valuable than those pulled from packs, because of how easy it was to get those cards, you just had to buy the deck
They can make the choice to sacrifice it for three mana, but then everyone else draws a card
However, if you do choose a target, and that target is illegal at the time Spider Food tries to resolve, the spell won't resolve and none of its effects will happen
In exchange for two materials, ZEUS can wipe the board of everything except itself
With the right binder, proper pages, and smart storage habits, ring binders remain a reliable choice for many collectors.
The standard process of finding a Pokmon card value consists of identification and pricing research