This Sonnet Will Make No Sense if You Don't Play Magic

It is the day before a tournament
Which will require I bring a standard deck.
I've several; but none that represent
A winning chance for me, but what the heck?
My favorite is all in blue and green,
But for a blue it lacks somewhat in tricks,
And has a lot of creatures; none too mean.
I have a day or so to try to fix
What I have got. I like it for the fun
Of Slippery Bogle and his wacky ilk.
But as I look through now I have begun
To see this deck's as menacing as milk.
It's out of date, too, mostly Eventide.
But do I play for fun, or play for pride?