I cleared this pretty easily with randos using my Support Jirachi set from a previous raid.
I swapped up the moves to run Light Screen over Reflect and even decided to run an attacking move in Meteor Mash. As it happened it encored me into that as opposed to Life Dew, but it ended up working out as I got like 4 attack boosts and basically ran it through with the help of the guy running Gholdengo. The other two mons were a shiny Dawn Wings Necrozma which didn't do a whole lot and a support Mew who ran Struggle Bug (no show for Misty/Electric Terrain though).
Jirachi @ Light Clay
Life Dew
Light Screen
Helping Hand
Meteor Mash
I will admit I got insanely lucky on the Sing RNG and only got slept twice, but I heal cheered both times to clear it asap. Thinking about it more, support Mew also does quite a lot of work here if you run one of the terrain moves + Light Screen + Life Dew. Pick you poison in terms of attacking move (probably Struggle Bug for those tasty spcl att drops).
I swapped up the moves to run Light Screen over Reflect and even decided to run an attacking move in Meteor Mash. As it happened it encored me into that as opposed to Life Dew, but it ended up working out as I got like 4 attack boosts and basically ran it through with the help of the guy running Gholdengo. The other two mons were a shiny Dawn Wings Necrozma which didn't do a whole lot and a support Mew who ran Struggle Bug (no show for Misty/Electric Terrain though).
Jirachi @ Light Clay
Life Dew
Light Screen
Helping Hand
Meteor Mash
I will admit I got insanely lucky on the Sing RNG and only got slept twice, but I heal cheered both times to clear it asap. Thinking about it more, support Mew also does quite a lot of work here if you run one of the terrain moves + Light Screen + Life Dew. Pick you poison in terms of attacking move (probably Struggle Bug for those tasty spcl att drops).