Also like all the other "brick" cards, it gets significantly better if you have ways of untapping the Vault for maximum value (HELLO, Paradox Engine!!!) and having ways of adding extra brick counters is always nice too (Atraxa, Praetors' Voice)
So Marvel works with everything and casts them so works doubly well with our big Eldrazi friends
"When the 30th anniversary comes around, it's just an extra opportunity to now open packs for your kids and get them involved in the collecting and how fun it is, and even the (trading card) board games," Hancox said
Spider Spawning is significantly more difficult to deal with than cards like Bloodline Keeper (which can get smoked by a Brimstone Volley, bounced by a Silent Departure, hunted down with Prey Upon, etc)
From those cards alone (and some basic lands), you have to build a deck that you pit against other Sealed decks