Who gets it: Pontus

Chaire, Basileios! Let Zeus and Mithras attest how splendidly you have led our kingdom, how great our wealth has become and how strong our army. We have followed your latest instructions and implemented the training of the terrible Macedonian phalanx, which has hurt us so profoundly in the past. No longer will Macedonian pikes defeat Pontic bravery, for now both former slaves and men born free will be able to fight back as phalangites themselves. Additionally, a new royal guard has been formed, which will make you proud: it is the Hypaspists of the demigod Alexander reborn! Cappadocia, Paphlagonia and the friendly Sea be praised!

It fires when at least 25 settlements are held by Pontus.

The game checks this at the end of every round.

7 units can be recruited once it fires:

Unit	Who can raise it
Freedmen Phalangites	Pontus
Pontic Aspidophoroi	Pontus
Pontic Chalkaspides	Pontus
Pontic General's Bodyguard	Pontus
Pontic Guards	Pontus
Pontic Hetairoi	Pontus
Pontic Thorakitai	Pontus

Units already in your armies are converted:

Before	After
Cappadocian General's Bodyguard	Pontic General's Bodyguard

2 units can no longer be recruited:

Unit	Who can raise it
Cappadocian General's Bodyguard	Pontus
Xystophoroi	Pontus