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Sorcery Color tag templates(None) Windfall Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way

Its better than proliferating because the creatures dont have to already have the +1/+1 counters on them (although it obviously isnt going to help with other kinds of counters)

Each Deluxe Pack: ex booster will guarantee at least one card with a rarity of 4 Diamond or higher

On top of this, if you want to collect the additional special edition cards, they cost even more

But for a high-end collector looking to buy the best vintage booster boxes, it doesnt get much better than Skyridge