リージェント

Regent's flagship AoE nuke: consume 7 diamonds and hit everything for 7x7 = 49 damage. It demands both cost 2 (or 1 upgraded) and 7 diamonds, making it extremely heavy, but the 49 AoE damage is overwhelming and wipes whole encounters.

It pairs even better after End of Stars or Weight dropping enemy Strength. Playing Reforge on the same turn adds 7 hits worth of bonus Forge, so it also boosts your Forge scaling significantly. The upgrade drops it to cost 1, making it far easier to slot, so upgrade priority is high.

• Build up to 7 diamonds before firing it. With Genesis (2-3 diamonds per turn) it comes online in a few turns.
• Shines on multi-enemy encounters. Even in a single-target boss fight, 7x7 = 49 is plenty.
• Playing Reforge on the same turn stacks 7 additional Forge per hit (+49 Forge), massively boosting the Sovereign Blade.

• Genesis: Pumps out 2-3 diamonds per turn, fueling Seven Stars' 7-diamond cost efficiently.
• Reforge: Its "extra Forge per attack this turn" trigger fires 7 times for Seven Stars' 7 hits.
• End of Stars: Casting it beforehand applies -9 Strength across Seven Stars' 7 hits for a massive damage boost.
• Black Hole: Each of the 7 diamond-spend pings adds 21-35 AoE damage, combining into a huge AoE swing.

• Act 1 early: Low. Too heavy when you have no way to stockpile 7 diamonds.
• Act 1 late: Medium. Worth considering once Genesis is secured.
• Act 2 onward: High. Once diamond supply is stable, 49 AoE damage functions as a finisher.
• Boss rewards: High. With Genesis, it comes online in 3-4 turns and becomes the fight's main damage source.