That's basically what happens with lifelinked Ajani tokens. Ajani tokens have "This creature's power and toughness are equal to your life total". And of course I ran 4 Beacons of Immortality. Another fun combo was Darien King of Kjeldor with all the enchantments and creatures I had that gain me life whenever creatures come into play. Whenever I take damage, Darien puts that many 1/1 soldiers into play. People would avoid attacking me because any damage I took would actually GAIN me life. I also ran Priveledged Positions, so it was next to impossible to deal with any of my shit. The deck was very slow to start, but if you didn't have me under control by around turn 5, shit got ugly. It was particularly amusing in 2 headed giant games when I could have someone cover me during my startup.