(A creature with skulk can't be blocked by creatures with greater power.) Whenever a creature with skulk deals combat damage to one of your opponents, put a +1/+1 counter on The Master and draw a card
That said, the synergy that this deck offers is more powerful than the average precon, putting the self-mill version, in my opinion, around a 4.5-5 power level
Obviously, a deck this narrowly focused also has no backup options, so if you can't score a knockout quickly, you'll be unlikely to win a game
It would add more damage from the first attack, and it would also prevent damaging itself
Other advantages and disadvantages are roughly the same as other barrier statues
It can also be combined with other healing Trainer cards to provide a strong healing combo to keep Pokmon from being KO'd