Need to finish off my deck and need 3 more cards.

I am in great Need of these cards.

I have tried multiple trades that people had this card on their tradelist but when it came down to it they dropped the trade cause they didn't want to trade 1 of the 3 cards.
Here are High Priority cards that I am trying to get before Next weekend.

Mana Reflection
Seedborn Muse
Doubling Cube

I don't mind trading single cards for single card as well.
Just really need these cards to finish off my deck. I am not to picky in what condition it is in as long as their no rips, water damage, or marked all over. I need them to be playable in tournaments.

Thanks