Shandalar - Program Bugs

This is because AI will discard a card anyway maybe even Cruel Edict so decides to play it instead.(Higher score)?
I have seen this many times in the past.It is not a bug either as they don't target creature.Without knowing AI's hand we can't really tell if it was good or bad decision.

That's true.
In most cases it won't matter, but it would be a bad decision to empty the mana if the AI has an instant it may want to cast on the player's turn.

Also, AARGH! I've spent FAR too much time trying to figure out what the 'bf' last in this bug ticket's title means. Please enlighten me.

[Korath]

Battlefield.

I'm fairly certain I've seen the AI do this when they wouldn't have to discard, I'm fairly certain I've seen it cast one into a creatureless board when they had something better on the table to do (Jayemdae Tome maybe?), and I've seen one ritual to cast it on me, making me sacrifice nothing, and burn for 1.

Didn't write down any of the specific examples though, will do that next time.

It's also worth noting that it's always better to not cast it, since then the AI would have mana open to play that card or any other card during my turn. Even if it didn't want to play anything, it's better to at least let the opponent guess if he has something useful to do with the mana. If it wanted that card in in the graveyard for a specific reason, it could just discard it (in the scenarios where it was at 8 cards - if it didn't have 8 cards, it's even worse to play it).