Can someone explain this trick to me. How can I benefit from a tax break on money that I gave away? given that I don't have the pretax money anymore either (you

Can someone explain this trick to me. How can I benefit from a tax break on money that I gave away? given that I don't have the pretax money anymore either (you'll recall earlier in the story I gave it away..). Are they giving it to themselves somehow? At best I can imagine they get their name on a school or something, a nice thing but hardly the same as still having the 100 million or whatever bucks in their pocket.