Depending on what your opponents discard, you can wind up drawing more than the number of cards discarded, since Kefka draws equal to the number of card types among discarded cards
If were looking at 600 dpi, 2.5*600=1500 and 3.5*600=2100, so 15002100 is the size of the card in pixels
Then, he can use his ability Cheer, which allows you to draw and card and add a counter to another creature when a creature with a counter attacks
Become a Valvagoth, a Tidespout Tyrant, etc, with the potential to flicker for the occasional bit of gravehate
This is where TCGplayer can help out
If youre digging for an answer and the two mana tap hasnt found it, you can even sacrifice the whole thing for one last chance