Forum:D.D. Crow vs Master Hyperion

Quick scenario that I'd like to clarify.

Assume that I have a Master Hyperion and The Sanctuary in the Sky on the field, and 3 Light Fairy cards (for the sake of identity let's just say marshmallon, zeraldias, and athena) in the G.Y. Sanctuary allows me to use Hyperion's effect twice.

I start my Hyperion's ignition effect in my main phase 1 by removing from play Athena to destroy one of my opponents cards on the field.

Can my opponent then chain with D.D. Crow and remove from play my Athena?

If so, does one of Hyperion's destroy a card effect become wasted? i.e., after that I can only remove from play one other monster and destroy one other card this turn?

Also, If I summon Master Hyperion in my MP1, and my opponent uses Bottomless Trap hole, or raigeki break; can I still use Hyperion's effect before it dies, or do i not have priority in this case and Hyperion dies before its ability is activated?

Thanks for all the help.