Get the Slime Ninja Statue (150 stone + armour statue + 50 gel) and put 2 slime statues on each side of it.
Then get 200 Gel
, 3 Souls of Might,
Fright
and Sight
to create a Gelatinous Catalyst
at a crystal ball
.
Use the Gelatinous Catalyst
at the Slime Ninja Statue to make the Slime Rain
begin.
After that, Throw an Overloaded Sludge
(40 Blighted Gel
+ Any Evil Block
at a Demon Altar
or Crimson Altar
) onto Queen Slime
while the Slime Rain
in happening to summon Goozma
.
I recommend damaging Goozma
itself, although the health is shared, attacking the Paladins
will only deal 75% damage