Don't.
That card is absolute garbage.
I wasted so many of my hard made gems on getting 3 and now I don't use any.
It's just too slow cause you can't attack the turn you use it.
SOul exchange cannot be use for synchro summon as synchro doesn't count as "tribute". This site does not give accurate info on that and mislead many people's understanding on synchro summoning.
Synchro summon "send" material to grave, not "tribute".