What do you think of this Darkrai/Mew Deck?

Please help me before i buy the cards i need for this deck! The deck list is:

8x Dark Energy
6x Fighting Energy
4x Medical Energy

4x Ultra Ball
4x Boss’ Orders
4x Saguaro
4x Roark
2x Luxurious Cape
2x Earthen Vessel
2x Roseanne’s Backup

4x Flutter Mane - TEF
4x Darkrai - OBS
4x Ting–Lu - PAR
4x Sableye - PAL
2x Hoopa EX - PAR
2x Mew EX - MEW