ultimate master booster box Magic the Gathering: Masters – Cards and Comics Central and each pack contains 15 random cards from the set Ultimate Masters - MTG Wiki

Previously, the Psychic type deck was headlined by two Mewtwo EX cards alongside two Gardevoir cards to call the shots in terms of Energy farming and have Mewtwo all set to fire off Psydrive in flat 2 turns

However, a card like Lapras takes advantage of the already-present Water Energy in the deck

Giving our Phyrexian Mites first strike and deathtouch until end of turn, not only it makes them able to kill everything, but in fact it makes the oppponent choose, either to block and loose his creatures or to get hit and get poison counters

Nintendo's latest comments suggest the company recognizes that simply printing more cards may not solve the problem on its own