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Heartfire Hero BLB 0138 · uncommon

Heartfire Hero · {R} · Creature — Mouse Soldier · Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it.
When this creature dies, it deals damage equal to its power to each opponent. · Power / toughness: 1/1

Heartfire Hero · {R} · Creature — Mouse Soldier · Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it. When this creature dies, it deals damage equal to its power to each opponent. · Power / toughness: 1/1

Price
from $0.261 printing
Win rate
56.5% GIH 31,547 instances · Premier Draft
Jul 30–Sep 3, 2024 · 17Lands
Draft
◆ Key pickThe first friendly targeting effect each turn adds a counter; its death damage uses its power.

Game-in-hand win rate, all deck colors. 17,820 wins in 31,547 card-in-hand instances.

28,918 distinct games · 10,180 distinct drafts · games recorded Jul 30–Sep 3, 2024.

17Lands file dated Sep 6, 2024 · 100-instance minimum · 17Lands public data ↗

Play

Mousefolk · Red–WhiteMousefolk plan →

The first friendly targeting effect each turn adds a counter; its death damage uses its power.

How this changes your picks

Rules-derived
Take it when
Play early Mice and use efficient targeting effects to trigger valiant while pushing combat damage. Look for support such as Flowerfoot Swordmaster and Intrepid Rabbit.
What to take next
Gnaw targets Hero first, triggering its counter before its damage is measured as Gnaw resolves.
Wrong pick
Valiant happens only once per creature per turn. Loading several tricks into one combat risks losing them to removal.
Mana & splash
Count the colored sources needed to cast this card on time; a synergy payoff is not a reason to weaken an otherwise consistent mana base.

More

One-pick Draft
The first friendly targeting effect each turn adds a counter; its death damage uses its power.

Draft data

56.5%when drawn (GIH)

+1.9 pp vs 54.6% average · 31,547 instances

Premier Draft · Jul 30–Sep 3, 2024 · average from 931,230 games

#104 of 258 nonland cards by win rate · last seen around pick 3.8 on average (80,336 packs).

9 of 42 red cards · 2 of 16 red uncommon cards.

Taken at pick4.717,187 picks
Makes the deck73.3%17,187 picks with known usage
When played55.3%69,205.5 matchesBenched 54.2%
20,087.5 matches
When drawn56.5%31,547 instances

Pick and maindeck observations: Jul 30–Sep 3, 2024. Played/benched cells use matches when available; the drawn cell uses game instances.

○ Opening hand 60.7% · 14,457 instances
● Drawn later 52.9% · 17,090 instances

In hand 56.5% · 31,547 instances
Unseen in deck 54.6% · 48,447 instances
+1.9 percentage points when drawn

Compared with red cards

Win rate when drawn56.5%31,547 instances9 of 42
Opening hand60.7%14,457 instances3 of 41
Drawn later52.9%17,090 instances24 of 42
In the deck55.3%79,922 instances7 of 42
Without seeing it54.6%48,447 instances7 of 42
Improvement when drawn+1.9 pp31,547 instances / 48,447 instances11 of 42
When benched54.2%20,087.5 matches32 of 42
Makes the deck73.3%17,187 picks with known usage14 of 42
Pick (last seen)3.880,336 packs12 of 42
Taken at4.717,187 picks12 of 42

Ranks require 100 observations for that metric; comparisons are descriptive, not a pick order. Pick ranks put earlier picks first.

Best decks for it

no-splash decks only · card-level in-hand rates · 100 minimum

Mousefolk RW57.9%13,440 instancesRaccoonfolk RG57.5%2,618 instancesLizardfolk BR56.7%4,677 instancesOtterfolk UR51.8%1,154 instances

Each tick is this card’s all-decks rate (56.5% · 31,547 instances). A high card rate does not prove that splashing it will improve your deck.

Best with

Adjusted associations, ranked by confidence.

Might of the Meek+4.5 pp28,338 games with both in the deck · 6,189 both drawnManifold Mouse+5.0 pp12,185 games with both in the deck · 2,154 both drawnShort Bow+4.8 pp10,515 games with both in the deck · 1,874 both drawn
How to read this

Observational, not a causal bonus. Both cards must be in the deck. Drawn means opening hand or normally drawn; each card counts once per game. Game-level approximate intervals do not account for repeated games by the same drafter.

At least 100 games in each of four drawn/not-drawn groups; adjusted for game length and screened by the lower confidence bound. Do not add these points to a card’s win rate.

Where it sits in the set

Above 60% of 258 nonland cards with 100+ instances, in win-rate order.

30% or lowerWin rate94% or higher

17Lands public datasets ↗ · CC BY 4.0 ↗ · Jul 30–Sep 3, 2024

Collect

1 printingScryfall USD, snapshot Oct 25Pack odds →

Pick a printing for its prices and pull odds.

Prices

BLB 0138 · Regular printingListings ↗
FinishFound inPrice
NonfoilPlay Booster · Value Booster$0.26
FoilCollector Booster · collector-sample · Play Booster · Value Booster$0.37

Foil in a Collector Booster · Modeled · About 1 in 25 packs (4.00%) · 38.7% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a collector-sample · Modeled · About 1 in 100 packs (1.00%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a Play Booster · Modeled · About 1 in 313 packs (0.32%) · 10.9% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Nonfoil in a Play Booster · Modeled · About 1 in 28 packs (3.63%) · 73.5% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a value · Modeled · About 1 in 1,039 packs (0.10%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Nonfoil in a value · Modeled · About 1 in 46 packs (2.17%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

How to pull it

Official rates for the whole category, not this card.

BoosterSlotPer packCategory
Play BoosterUncommons100% per positionUncommons
Play BoosterWildcard of any rarity100%Wildcard of any rarity
Play BoosterTraditional foil of any rarity100%Traditional foil of any rarity
Collector BoosterTraditional foil uncommons100% per positionTraditional foil uncommons

Wizards · Collecting Bloomburrow ↗ · Oct 29, 2026

Details & sources

Legal in
Historic · Timeless · Modern · Legacy · Vintage · CommanderLimited eligibility depends on the event and its booster pool.
Illustration
Jakub Kasper, BLB 138 · Scryfall ↗
More like this
Mousefolk cards → · Regular printing printings →
Sources
Wizards · Collecting Bloomburrow · Oct 29, 2026
Scryfall USD, snapshot Oct 25
Comprehensive Rules ↗