The set symbol on timeshifted cards was purple, but had no associated with purple mana
You've got good mana fixing with Ignoble Hierarch , Rampant Growth , and the full set of Talismans , you have a decent suite of answer cards like Maelstrom Pulse and Terminate , card draw from things like Syphon Mind and Deathreap Ritual , and significant threats in the form of Broodmate Tyrant and Archon of Cruelty
The plane has been united under a new planar government, the Avishkar Assembly, and its capital remains the city of Ghirapur
However, since usually the first Pokmon we defeat is EX, which gives 2 win points, we only need to defeat one Pokmon of any type after that to win the game
X onto your bench as soon as possible so you can use its Poke-Body and when you put Giratina into your active Pokemon spot I would use Darkness Lost every turn so you can knock out many Pokemon at once, you will probably have to last 3 to 4 turns with Giratina out there to knock out most of your opponent's Pokemon and then they'll all have to go to the Lost Zone and they won't be able to them again in play
It isnt quite a Vampiric Tutor, but its immediately better than a lot of other mono-black ways of searching your deck, like Diabolic Tutor or Grim Tutor