First of all, all credit for this goes to Obviam/Hextator! What I've posted is just a demonstration of his solution.
Text table is at: 0xB808AC
Tactician RAM data is at: 0202BC18
Choose the text slot you wish to sacrifice to the Gods, put that number in a hex calculator, multiply by 4, and add your answer to the base offset (B808AC). This is the beginning of the pointer you need to replace, write 18 BC 02 82 there instead.
And this is Hextator's original demonstration.