リージェント

• Type: Attack
• Cost: X
• Effect: Deal 8 damage X times. If X is 4 or greater, double X.

An X-cost attack that spends all Energy to deal 8 damage X times. Attacks double past X>=4, so pouring in 4+ Energy produces explosive output: X=4 becomes 8x8=64, X=5 becomes 8x10=80.

The higher your effective Energy ceiling, the bigger the payoff. Synergizes with Energy-boosting relics and with turn structures where you bank Energy then release it. Crossing the X=4 threshold decides whether this is a finisher or a dud — above it, the cost efficiency is top-tier.

• Target at least X=4 (4 Energy spent). That's where damage jumps to 8x8=64
• Build charging turns so you can release everything through Heavenly Drill next turn
• Void Out (first card of the turn free) effectively adds +1 to your X

• Void Out: Makes Heavenly Drill free, letting every remaining Energy go into X
• Foregone Conclusion: Secures +2 draws next turn, improving your odds of drawing Heavenly Drill
• Hidden Fortune: Boosts next turn's Energy. Time it to your Heavenly Drill turn for maximum X