Forum:Solemn judgement vs hieratic effects

Hello I was wondering about the specific timing that cards can activate.

So I've got Hieratic Dragon Tefnuit on the field with 200 less life points than my opponent. I then activate the equip spell card Megamorph targeting him and activating his effect to summon a Blue-Eyes White Dragon from my deck. After I summon my Blue-Eyes my opponent then activates Solemn Judgement targeting my Blue-Eyes to destroy him, is this legal?

The same question goes for Solemn Warning, to the summoning resolution. --68.80.142.179 (talk) 20:24, September 5, 2012 (UTC)