Mega Rayquaza-EX is equal to, if not better than Snorlax VMAX because it's Mega Trait (the green box below it's name) allows it to evolve the turn it's put into play. Going second, you can use Ultra Ball oer Quick Ball to search Hoopa-EX, which when benched searches 3 EX Pokemon. In addition to searching Rayquaza-EX, you can search Shaymin-EX, which when benched, allows you to draw until you have 6 cards in hand. More importantly, Hoopa-EX can search Jirachi-EX, which searches a suporter when benched, usually being Guzma & Hala Tag Team. After you use Jirachi-EX's ability, you draw with Shaymin's ability, and then discard 2 with Guzma & Hala to search Triple Acceleration Energy (provides 3 colorless energy to evolutions), the Rayquaza Spirit Link (allows you to Mega Evolve Rayquaza-EX without ending your turn) and Sky Field (increases your bench limit to 8). Reuse Hoopa-EX with Scoop-up Net to fill your bench and attack for 240 on your first turn.