Mother of Twins

Mother of Twins is another version of the Eye of Cthulhu. After the Twins are defeated, it has a 1/5 chance of spawning every night. It can also be summoned with the Large Mechanical Eye, which is crafted with lens(4), Soul of Sight(6), and either with Iron Bars(10), Lead Bars(10), or Titanium Bars(6). It can only be summoned at night, and must be defeated before dawn.

When first spawned or summoned, the Mother of Twins will spawn, along with Spazmatism. Spazmatism is identical to the Spazmatism in the Twins fight, except it is not attached to Retinazer.

The Mother has 45,000 health. It has two forms. In its first form, it will "switch" between the AI of the Twins in their first form. It will always do 50 melee damage when it hits the player. Its laser does 48 damage, and its cursed flame will do 45. The Cursed Inferno debuff it inflicts will last for 8 seconds. It has 15 defense. The Mother is slower than Spazmatism in this form in terms of movement in general. In its second form, which is triggered at about 20,000 health, Retinazer will spawn, regardless if Spazmatism has been defeated. It now act identically to Spazmatism, though it inflicts 15 more damage with each attack than Spazmatism, and now has 6 defense. It also charges much more frequently and aggressively. Its charges are close to the speed of the Eye of Cthulhu in Expert Mode.

In its first form, the Mother will have a blue iris, but otherwise looks like the Eye of Cthulhu, other than t is significantly larger than the Eye of Cthulhu (1.5 times larger in diameter, to be precise). It also has less veins on its eye. In its second form, it will look like a larger Spazmatism but has a laser coming out from its mouth, though it is never used.

Tips
-In its first form, defeat Spazmatism first, then focus on the Mother, as it is slower and easier to dodge. In the second form, defeat the Mother itself first, as it is harder to dodge and has very little defense.