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Card Guide

Fiend Fire

Cost: 2RareAttackIronclad

Card Effect

Exhaust your Hand. Deal 7 damage for each card Exhausted.

7

Damage

Upgrade

damage: +3

Keywords

Exhaust

When to Pick Fiend Fire

Fiend Fire is a 2-cost attack card for the Ironclad. It provides 7 damage. 7 damage is a solid efficiency pick to strengthen your damage curve. Pick this when your deck needs front-loaded damage, scaling.

When to Skip

Skip this card when your deck already satisfies its role. Adding it past that point only dilutes your draw.

Upgrade Value

Medium upgrade priority. Damage +3 — a modest but useful improvement.

Synergies

  • Exhaust: Demonic Shield, Dominate, Feed

Is Fiend Fire worth taking?

A-Tier · Hand dump payoff

Fiend Fire exhausts your hand and deals 7 damage per card, so it is a finisher for decks that can fill their hand. It is awkward when your hand is small, and it is excellent when you have drawn a pile of cards you do not need.

Numbers and upgrade

StatBaseUpgraded
Cost22
Damage710

Upgrade changes: Damage +3

How to play Fiend Fire

  • Play it after you have drawn as much as possible. Every card in hand is another 7 damage, so draw effects directly increase the payload.
  • Use it to clear filler and finish at the same time. The exhaust is not a cost if those cards were not going to be played this turn.
  • Upgrade it when you can. Three extra damage per card adds up quickly in a full hand.

Common mistakes

  • Playing it with only two or three cards in hand. The damage is far too low for 2 energy.
  • Forgetting that it exhausts the whole hand, including cards you wanted to keep for the next turn.

Cards that work with Fiend Fire

Fiend Fire wants a full hand and a reason to empty it. Draw cards fill the hand, exhaust payoffs turn the discard into value, and Offering or Battle Trance refill afterwards.

Where to get Fiend Fire

Fiend Fire is in the Ironclad rare pool. It can appear in card rewards after combat, in shops, and in events that generate cards. Elites and bosses do not guarantee it, but they usually improve your odds of seeing higher-rarity cards.

Builds that use it:Ironclad Infinite Exhaust

Fiend Fire FAQ

Is Fiend Fire good in Slay the Spire 2?

A-Tier · Hand dump payoff. Fiend Fire exhausts your hand and deals 7 damage per card, so it is a finisher for decks that can fill their hand. It is awkward when your hand is small, and it is excellent when you have drawn a pile of cards you do not need.

What does Fiend Fire do?

Exhaust your Hand. Deal 7 damage for each card Exhausted. Its base cost is 2, it is a Attack, and it sits in the Rare rarity.

Should I upgrade Fiend Fire?

Medium upgrade priority. Damage +3 — a modest but useful improvement. Upgrade changes: Damage +3。

How do I get Fiend Fire?

Fiend Fire is in the Ironclad rare pool. It can appear in card rewards after combat, in shops, and in events that generate cards. Elites and bosses do not guarantee it, but they usually improve your odds of seeing higher-rarity cards.

Which cards work well with Fiend Fire?

Fiend Fire wants a full hand and a reason to empty it. Draw cards fill the hand, exhaust payoffs turn the discard into value, and Offering or Battle Trance refill afterwards. Cards to look for: Dark Embrace, Feel No Pain, Battle Trance, Offering。

What are common mistakes with Fiend Fire?

Playing it with only two or three cards in hand. The damage is far too low for 2 energy. Forgetting that it exhausts the whole hand, including cards you wanted to keep for the next turn.