You're probably asking "what the hell is meta-strategy?" Well there's no one
answer to this. But I say it is the overall strategy of getting what you want out
of the playing of a game.
A good strategy will help you to reach your target of removing 20 life points
from your opponents wizard, thus winning the game.
A good meta-strategy will, over the course of several games in a series, help
you to reach your target of feeling good about yourself afterwards, whilst your
opponent feels bad about him or herself.