Mother Flame

The Mother Flame is an immensely powerful weapon created by Vegapunk and utilized by Imu and the Five Elders.

Appearance
The Mother Flame's appearance is mostly unknown, as it has only been seen when shrouded by clouds. However, it is known that it is extremely large, with its width fully encompassing an entire island; it is also very unnaturally dark.

Abilities and Powers
The Mother Flame is capable of vaporizing entire islands in an instant by firing a rain of lasers down onto its target. Once the annihilation is complete, not a trace of the target is shown to remain. The damage it is capable of inflicting is one of the greatest ever shown in the world, being one of only two abilities thus far shown to be capable of annihilating entire islands (alongside the Goro Goro no Mi). Its immense power caused Emporio Ivankov to speculate that it may be one of the Ancient Weapons, which may be possible if Imu is indeed one of the First Twenty as has been hypothesized.

It is not clear how the Mother Flame is controlled, but the Five Elders were given the order to navigate it to Lulusia Kingdom. It moves through the air, over the clouds. It is unknown how fast it travels, although its presence was not detected by anyone on Lulusia until it was already overtop of the island.

The annihilation of Lulusia was performed as a test of the Mother Flame's power, indicating it was just recently completed. It is not known whether Imu and the Five Elders concluded it to be successfully operational following Lulusia's destruction.

Past
The Mother Flame was developed by the scientist Vegapunk and access to it was granted to Imu and the Five Elders.

Egghead Arc
Sometime following the Levely, Imu ordered the Five Elders to test out the Mother Flame on the island where the Lulusia Kingdom resided. The Five Elders agreed to this, and Topman Warcury said that its results may influence how they would handle their growing troubles with Vegapunk and Egghead. The Mother Flame was sent to the Lulusia Kingdom and proceeded to annihilate it in seconds, leaving no trace of the island behind; it was declared that the kingdom never existed.

Trivia

 * The last two katakana characters of the Mother Flame's name in Japanese are the same characters that spell "Imu".