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Boom Bloom
Defeat Agronox after fulminating 4 budding flowers in the Cathedral of Eternal Night on Mythic difficulty.
Boom Bloom requires defeating Agronox in the Cathedral of Eternal Night on Mythic difficulty after fulminating all 4 Budding Flowers by positioning yourself on each one when a Fulminating Lasher reaches and detonates on you.
Set Mythic Difficulty
Enter the Cathedral of Eternal Night and set the dungeon to Mythic difficulty before engaging Agronox.
Clear the Room
Clear all trash in Agronox's room before starting the encounter so nothing interferes with the achievement mechanic.
Mark the Budding Flowers
Locate and mark all 4 Budding Flowers before pulling Agronox — they sit along the edges of the room near the walls, with 2 on each side spaced apart from each other.
Engage Agronox Carefully
Pull Agronox and avoid killing him; if using a pet, keep the boss aggroed to the pet to reduce damage taken while you manage the achievement mechanic.
Stand on Budding Flowers
When Fulminating Lashers spawn (roughly every 30 seconds), move to and stand directly on a Budding Flower so the Lasher reaches you there and uses Floral Fulmination, detonating on the bud and converting it into a bloomed flower — use a defensive cooldown to survive the explosion.
Fulminate All Four Flowers
Repeat the process for each of the 4 Budding Flowers, confirming each one has visibly changed into a small flower before moving on — if the bud has not visually changed, it was not successfully fulminated.
Defeat Agronox
Once all 4 Budding Flowers have been fulminated, kill Agronox to complete the Boom Bloom achievement.
Tips
See the video guide for a visual walkthrough of the Fulminating Lasher positioning on each Budding Flower.