Use Emissary of Pandemonium with level 1 monsters to Synchro summon level 8 monsters.
You can use The Trojan Horse, Cost Down, and Amarylease when summoning Emissary of Pandemonium to summon him with only 1 tribute while retaining his original stats. Cost Down can even be used with Amarylease or Emmisary of Pandemonium's own effect to summon him for no tribute. Use Mausoleum of the Emperor to normal summon him for no tribute at all.
This card seems to have been include to work with the newly introduced battle tunning, send this guy to the graveyard (uprising for instance) and one card will get a healthy 2600 attack boost (with uprising 4100).