Thermalily

The Thermalily is a generating flower added by Botania. It generates Mana by consuming Lava. According to the Lexica Botania, it is primarily intended to be used as an 'emergency' Mana source, rather than for a continuous supply.

The Thermalily consumes Lava source blocks to generate very large amounts of Mana. It searches the same way as Hydroangeas, all 4 directions and diagonals at the same altitude. After consuming a block of Lava, a Thermalily will produce 20 Mana per tick for 900 ticks (45 seconds), producing a total of 18,000 Mana.

In Botania versions prior to 439, the cooldown after ceasing mana production was 6,000 ticks (5 minutes). In the aforementioned version, the cooldown was changed to variate randomly between 400 ticks (20 seconds) and 6,000 ticks (5 minutes). Additionally, the length of the cooldown can be measured with a comparator.

A Thermalily can store 900 Mana internally, and can be bound to a Mana Spreader within 6 blocks of itself to transfer its Mana.

During cooldown the Thermalily destroys all surrounding lava blocks without refilling its mana buffer. Since Botania version 439, this also causes the Thermalily to reset it's cooldown.

Trivia

 * The flower's flavor text refers to Blood Magic's Serenade of the Nether ritual, which was often used to provide Lava to Thermalilies.