you can specifiy tnum:number on token parameters and it will concatenate the default token id and the specified number. example: token(Saproling, Creature Saproling, 1/1, green, tnum:15) if the source id is 12345, the default token id will be -12345, concat tnum, id will be -1234515 and the game will try to find the image 1234515t.jpg