[IC] New Crobuzon & the World Beyond

[GM Marvel]

Did it attacking Ning trigger my Readied actioon to throw?

[OoC: Your readied action was...

"Ready action to throw a shard if someone can point out the attacker, or if the attacker reveals its square in some way." 

He has not revealed what square he's in.  An invisible force smashed Ning from somewhere from behind him.   Betimi knows nothing about the creature's size or reach.  Since Nang named the creature nothing is stopping anyone from making knowledge: planes checks to get more info.  But you still wouldn't know if it's beside Ning, 10' away, flying directly behind Ning or 5' or 10' above the deck.

It's actually up to Selina to say something [free action] to help pinpoint the creature which se could do as soon at it appeared to her last round.  So depending upon what she does will determine if your ready action gets triggered.  ]