However, if youre looking at every Magic card ever printed, the biggest is still - and likely always be - the B.F.M
Note that sagas only sacrifice themselves as part of the resolution of their last chapter ability, or if they somehow end up with more counters on them than they have chapter abilities, which very rarely happens and doesnt prevent their chapter abilities from triggering anyway
Now imagine that same card, but it was easier to cast, and it also came attached to a 2/4 body
Then you put Mind Rot into your graveyard
Kefka, Court Mage / Kefka, Ruler of Ruin Another top dog in Duel Commander, Kefka, Court Mage gives discard strategies teeth by forcing everyone to pitch cards while it rewards you with draw power based on what was lost