1E Dmg ((MA+Y)*MA/2)

Hard coded mechanics : This formula is a multi Hit formula. Number of hits = random  from 1 to Ability X   (See here : line 0017d5e0)
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00189434: 27bdffe8 addiu r29,r29,-0x0018    |
00189438: afbf0010 sw r31,0x0010(r29)       |
0018943c: 0c06216e jal 0x001885b8           |-->Magical Evade Calculation If Abillity is evadeable roll Ability Evade byte against Ability base Hit
00189440: 00000000 nop                      |
00189444: 14400003 bne r2,r0,0x00189454     #If Attack is not Evaded
00189448: 00000000 nop                          |
0018944c: 0c062269 jal 0x001889a4               |-->2Truth/Formula 5E-5F Calculate damage Set Damage (MA * (MA+Y)/2) - Altered by M-Support/Status/Element - Roll Status Proc (19%)
00189450: 00000000 nop                          |
00189454: 8fbf0010 lw r31,0x0010(r29)       END
00189458: 27bd0018 addiu r29,r29,0x0018        
0018945c: 03e00008 jr r31                      
00189460: 00000000 nop                         

Return location

Battle.bin
0018b97c - Pre Formula Setup