Forum:Mist Valley Baby Roc eff query

Can I activate th effect of Mist Valley Baby Roc, when I activate the following cards? and please give valid reasons so that I can relay them to my friends:

1.Dragon Ravine the discard cost can I summon him or does he misses the timing?

2.Dragunity Knight - Gae Dearg, can I search for him then send him to the grave, therefore activating its eff?...

3.Card Destruction can I special summon him after the effect resolves or before or not possible?...

4.Hand Destruction by any chance?...

please thank you....

122.54.153.174 (talk) 14:13, March 7, 2013 (UTC)