Mass Golem is a new strategy designed primarily to deal with a new style of base using an open ring around a central core to direct GoWiPe troops away from the Town Hall. (Note it can be effective on other bases too)
In these bases, Golems in a GoWiPe deployed from one area will always have a nearby defence to target once they are in the middle ring. So they will walk around the ring and never target the Town Hall core section, leaving any other troops that do head that way undefended.
The Mass Golem strategy uses a Jump Spell with two Golems and a few wizards in two adjacent corners to push in and break that ring of defences. Then two jump spells in the middle between those corners allow the remaining golems, wizards and heroes to push in to the middle of the base. (If facing a base with one multi-inferno and one single-inferno, attack from the side furthest from the single).
Use the 5th spell as a rage near the Town Hall, and a Poison spell to help with the clan castle troops (the new style Earthquake over the high HP core might be a viable alternative).