Planeswalkers [Yes, the MtG thing, 3.5 PrC, please comment]

[qwertyu63]

I'd pick a different color for white, like pink (magenta). Yellow's tough to read

Silver should work. [Pink is from an Un-set anyway]

Also, a few abilities that you would need to explain how they work:
Swampwalk and similar (can't be blocked if your opponent has that land)
Threshold (gain an effect when you have 7+ cards in the graveyard)
Anything dealing with cards, for that matter
Flying
Fear (can only be blocked by black and artifact)

There is no blocking or graveyard, so Landwalk, Threshold and Fear do nothing.
Cards are motes.
Flying was already handled.

Specific card that seems overpowered if you directly converted it
Terror– 1B. "Destroy target nonartifact, nonblack creature. It can't be regenerated"
Even if you add a save, it's still a save-or-die effect at level 8.

Level 9 (Note that you get casting at level 2), but point made. Note that Doom Blade already made the list, with a DC 15 Fort throw, which Terror would get as well.