(Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.) Whenever a creature you control with power 4 or greater enters, draw a card
It too easily allows for access to a large portion of ones deck, without having to guess how far you need to go, and leaves the mana up for casting the cards drawn right away
Like we just mentioned, because of the guaranteed access to rare cards in Collector Boosters, they command a significantly higher price than a Play Booster: the MSRP for a Final Fantasy Collector Booster is a whopping $38 , compared to the $7 for a Play Booster
While this isn't an exact science (since expensive reprints will limit the price of new cards, which might be hurting the Bant deck a bit, since it has the highest-value reprints), this system works pretty well in general
This unique game mode has you jam two 20-card packs together to make one complete 40-card deck and battle against your opponent using an equally random deck