FE7 style SpawnAssassinfx
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Usage (see here)
SVAL 3 0x6 // [slot3] = x
SVAL 4 0x8 // [slot4] = y
ASMC CallEvent_SpawnAssassinfx
STAL 1
Port from FE7, you can also directly load an Assassin after call for such bmfx just as what it did in FE7