Magma cream is obtained by crafting blaze powder with slimeballs or by killing magma cubes, which spawn in Nether fortresses and basalt deltas.
Magma cubes drop 0–1 magma cream upon death. The maximum is increased by 1 per level of Looting, for a maximum of 0–4 with Looting III.
Magma cream is primarily used to brew Potions of Fire Resistance, which protect players from lava and fire damage. It is also used to craft magma blocks, which emit light and deal damage to mobs and players standing on them.