Jihad checks its sacrifice trigger ("When the chosen player controls no nontoken permanents of the chosen color, sacrifice Jihad.") continuously, instead of checking for an event; this is inefficient and (under admittedly contrived circumstances - animation via Opalescence, then something like Mirrorweave changing it into a different creature) incorrect.

Worse, there aren't necessarily any calls to the card function after first strike damage, nor (usually) at the end of combat, so it may not get buried until much later than it should. (Original report.) recalculate_all_cards_in_play() should be called in each case.

It also buries itself instead of sacrificing, and won't trigger if the chosen player controls only token permanents of the chosen color.