Getting all three on the board would be chaos, even more so if they were all one of Bloomburrows Raised Foils
" It's Vmax rule, is when your Pokemon vmax is knocked out, your opponent takes 3 prize cards"
But you are still able to get Shaymin EX with packs other than Roaring Skies, you just have to be patient and wait for someone willing to trade for those packs
Lets consider a deck of 20 untapped lands and 18 tapped lands, and 61 filler cards, and three variations of it where weve replaced a number of filler cards by either a ramp package, a draw package, or both
The Black one Overlord of the Balemurk costs five for a 5/5 with two-cost and impending five turns, that mills four and then you'll raise a dork/planeswalker to your hand from your 'yard