Rediscover the Way Saga did not go to graveyard. It just remained on the battlefield for the remainder of the game at 3. It also had temporarily vanished just before step 3, then reappeared on the battlefield.

Otherwise, it had the 3rd ability, just sitting on the stack until I used it, instead of going to the pending area. I later played another one, and it behaved normally and went to the graveyard as expected. The first one remained as it was.

Odd yes, but did not seem to affect actual gameplay in that case, but I suppose if I were depending upon it to be in the graveyard, or something that effect how many permanents in play, I suppose it could have also been exiled or stolen?