Now, Celesteela can comfortably come in on some of Giratina's moves as well. going by the set from earlier for Giratina, we get,>252+ SpA Giratina Shadow Ball vs. 248 HP / 156 SpD Celesteela: 102-121 (25.6 - 30.4%) -- 2.3% chance to 4HKO after Leftovers recovery
While this can be outplayed, getting Leech Seed of Giratina fucks it over, hard. Giratina can run Thunderbolt to get around Celesteela, but then you miss out on Aura Sphere, Defog, or will-o-wisp, which makes it weak to Tyranitar.
Next we have Mega Sableye>252+ SpA Giratina Draco Meteor vs. 248 HP / 252+ SpD Sableye-Mega: 127-151 (41.9 - 49.8%) -- guaranteed 3HKO
OH look, Draco Meteor fails to kill it and never will, thanks to that SpA drop it causes.
How about Mega Scizor?>252+ SpA Giratina Shadow Ball vs. 248 HP / 8 SpD Scizor-Mega: 118-141 (34.4 - 41.1%) -- guaranteed 3HKO
Oh look, it walls Giratina too! Giratina doesn't even get Flamethrower or Fire Blast.
Assault Vest Tangrowth sits comfortably against it too.>252+ SpA Giratina Draco Meteor vs. 252 HP / 228+ SpD Assault Vest Tangrowth: 144-171 (35.6 - 42.3%) -- guaranteed 3HKO
Assault Vest Magearna isn't as common as it used to be, but Giratina is helpless against it (regular Magearna only takes 40% from a Shadow Ball)>252+ SpA Giratina Shadow Ball vs. 248 HP / 252+ SpD Assault Vest Magearna: 52-63 (14.3 - 17.3%) -- possible 6HKO
Moving on to a different Giratina set next post.