Regent Build

🌌 The Aligned Crown

Name: The Ultimate Regent Guide in Slay the Spire 2 – Best Build, Cards, and Tips
Channel: SiNKiLLeR

Refund Energy with Alignment to loop 0-cost Star-gainers into a Radiate kill

Updated for Early Access patch 0.104.0· Updated 2026-06-06

SExpert

starsinfiniteenergyradiateaoe

Win condition: Run a razor-thin deck so you redraw the same handful of cards every turn, then use Alignment to refund the Energy you spend on 0-cost Star-gainers — piling up a huge number of Stars GAINED in one turn so Radiate one-shots the board while Black Hole pings on every single gain.

S-Tier
Tier: Expert
Difficulty: 10
Core cards: High-ceiling combo finisher
Power

Reviewed by SpireForge Editorial

Updated 2026-06-06

Strategy informed by Caleb Gannon Gaming, SiNKiLLeR

Deck core

Core cards

The cards this build is built around — prioritize these on every run.

Must-pick

Flex picks

Crescent Spear

Synergy

Relic priorities

What to grab from shops, bosses and chests to power the engine.

Divine RightCore
Regent starter relic granting the Stars resource at combat start — an instant Black Hole ping and a head start on the Radiate counter every fight.
Divine DestinyStrong
Companion Regent starter relic granting a resource at combat start; more early Stars means more early Black Hole pings and a faster loop.
Lunar PastryStrong
Regent relic granting a resource at the end of your turn, topping up the Star economy so the loop never runs dry.
Galactic DustStrong
10 Block for every 10 resource spent — turns the high-spend Stars loop into durable defense alongside Child of the Stars.
Philosopher's StoneSituational
Per-turn resource gain keeps the loop ticking on slow boards (downside: all enemies start with 1 Strength).
Mini RegentSituational
Strength the first time you spend each turn — small permanent buff that makes Shining Strike and Solar Strike hit harder while you loop.

Game plan

How to play

Step-by-step through the run, from opening hands to the win.

Thin the deck relentlessly
The loop only works if you redraw your engine every turn. Remove Strikes and Defends at every campfire/event, and keep the deck small so Alignment, Radiate, Royal Gamble and Shining Strike come back around each turn instead of getting buried.
Land Black Hole and The Sealed Throne first
Black Hole converts each Star gain into AoE and The Sealed Throne adds a Star per card played. With both Powers down, every cheap card you play is already chipping the whole board before Radiate even fires.
Refund Energy, then chain free gainers
Lead with Alignment for +2/+3 Energy, then spend it on 0-cost gainers — Royal Gamble (9 Stars), Big Bang, Venerate, Solar Strike, Glow. Each gain pings Black Hole and adds to this turn's Radiate counter.
Front-load gains, fire Radiate last
Radiate counts only Stars gained THIS turn, so play it as the final card after every gainer. With Royal Gamble plus a few small gains you are routinely gaining 12+ Stars in a turn for a 36-48 AoE hit on top of all the Black Hole pings.
Use Shining Strike as your recurring loop piece
Shining Strike puts itself back on top of your draw pile, so in a thin deck it shows up every turn for guaranteed 2 Stars and 8-11 single-target damage — a free recurring gainer that keeps the engine fed.
Bank Block when you must defend
Child of the Stars converts every Star you spend into Block, and Convergence/Gather Light add Block while keeping the gain economy alive — so a defensive turn still advances the plan instead of stalling it.

Honest take

Pros & cons

Strengths

Near-infinite Energy and Stars in a thin deck makes Radiate a repeatable board wipe.
Black Hole turns every gain along the way into bonus AoE, so the turn deals damage twice.
Self-defends through Child of the Stars and Block-attached gainers while it nukes.

Weaknesses

Demands heavy deck-thinning and precise sequencing — very high decision load.
Bricks without a Stars payoff or enough thinning; weak, fragile opening turns before the loop assembles.

Opening

Mulligan & priorities

What to keep, what to ditch in your opening hands.

Keep Black Hole and/or The Sealed Throne — the payoffs that make every gain matter.
Keep Alignment; it is the Energy refund that powers the whole loop.
Keep Royal Gamble or Big Bang as a single huge gain spike for Radiate.
Hold Radiate for last in the sequence, never as an opener.
Toss raw Strikes/Defends and anything that neither gains Stars, refunds Energy, nor defends.

Map strategy

Pathing

How to route the map to assemble the build and stay healthy.

Deck-thin in Act 1, secure a payoff

Remove starter cards aggressively and grab at least one of Black Hole or Radiate before loading up on raw gainers. A small deck with one payoff already loops better than a fat deck of gainers.

Add cheap gainers and Alignment copies in Act 2

Once a payoff is online, every Venerate, Solar Strike, Glow, Royal Gamble and especially a second Alignment increases the loop's throughput. Convergence and Hidden Cache smooth out Energy and gains.

Pick up Genesis / The Sealed Throne for the late game

The passive per-turn and per-card Star engines make Radiate huge in long boss fights; prioritize them in rare rewards and shops heading into Act 3.

Avoid these

Common mistakes

Playing Radiate before front-loading your gainers — it only counts Stars gained the same turn, so an early Radiate does almost nothing.
Running a bloated deck so the loop pieces (Alignment, Shining Strike, Royal Gamble) get buried and never recur.
Spending Alignment's Energy on non-gainers; the refund should fund more Star gains, not random cards.
Forgetting Black Hole pings on Stars SPENT too — Child of the Stars spending is also damage, not purely defense.
Holding Royal Gamble for 'later' when it's upgraded with Retain anyway — dump it into the Radiate turn for the biggest counter.

Quick answers

FAQ

Common questions about the The Aligned Crown Regent build.

Is the Alignment infinite Regent build good in Slay the Spire 2?

It's an S-tier, Expert-difficulty combo finisher. In a heavily thinned deck Alignment refunds enough Energy to keep replaying 0-cost Star-gainers, so Radiate detonates the whole board every turn while Black Hole pings on every gain. It's demanding to pilot and bricks without thinning, but its ceiling is among the highest in the Regent pool.

What cards make the Alignment Stars loop work?

Alignment provides the Energy refund, Radiate is the per-Star-gained AoE payoff, and Royal Gamble (9 Stars) and Big Bang are the big 0-cost gains. Black Hole and The Sealed Throne turn each gain and each card played into extra damage, and Shining Strike recurs every turn because it puts itself on top of your draw pile.

How do you not run out of Energy?

Keep the deck thin so Alignment cycles back fast, and lean on Convergence (next-turn Energy and Stars while Retaining your hand), Hidden Cache and Genesis for free Stars. Most gainers are 0-cost, so Alignment's +2/+3 Energy comfortably funds a full rotation, plus an Energy Potion for the kill turn.

What relics does the Alignment infinite build want?

The Regent starters Divine Right and Divine Destiny hand you Stars at combat start for instant Black Hole pings, Lunar Pastry refills Stars at end of turn, and Galactic Dust converts your heavy Star spending into Block. Philosopher's Stone keeps the loop ticking on slow boards.

Provenance

Sources & video guides

This build's strategy is informed by these community creators.

The Ultimate Regent Guide in Slay the Spire 2 – Best Build, Cards, and Tips
SiNKiLLeR·76K·34:18