Heartlash Cinder 
Creature — Elemental Warrior
$0.15 #26340 0.00 18.1 years
Haste
Chroma — When this creature enters, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana costs of permanents you control.
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Cards similar to Heartlash Cinder expected a card that isn't here?
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Sootstoke Kindler91%
$0.14↓#266400.0018.3 years
"Haste"
Mudbrawler Cohort90%
$0.13↓#269980.25↑18.3 years
"This creature gets +1/+1 as long as you control another red creature."
+1 more matching line
Foundry Street Denizen86%
$0.16↑#10401↑0.29↑13.6 years↓
"Whenever another red creature you control enters, this creature gets +1/+0 until end of turn."
Outrage Shaman85%
$0.11↓#253020.24↑18.1 years
"When this creature enters, it deals damage to target creature equal to the number of red mana symbols in the mana costs of permanents you control."
Ruby Medallion82%
$13.06↑#291↑0.28↑28.9 years↑
"Red spells you cast cost less to cast."
less to cast."
Chandra's Phoenix82%
$0.25↑#14830↑0.0615.1 years↓
"Haste"
Ember Weaver82%
$0.04↓#275720.0417.6 years
"As long as you control a red permanent, this creature gets +1/+0 and has first strike."
Ring of Valkas78%
$0.49↑#5073↑0.0214.1 years↓
"At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's red."
Zuko, Avatar Hunter76%
$0.59↑#13461↑0.000.8 years↓
"Whenever you cast a red spell, create a 2/2 red Soldier creature token."
The Red Terror75%
$6.41↑#7625↑0.22↑3.9 years↓
"Whenever a red source you control deals damage to one or more permanents and/or players, put a +1/+1 counter on this card."
Thunderous Might75%
$0.28↑#18394↑0.0012.6 years↓
"Whenever enchanted creature attacks, it gets +X/+0 until end of turn, where X is your devotion to red."
Battle Brawler74%
$0.14↓#246070.29↑11.6 years↓
"As long as you control a red or white permanent, this creature gets +1/+0 and has first strike."
Thornscape Familiar73%
$0.26↑#17790↑0.0725.6 years↑
"Red spells and white spells you cast cost less to cast."
less to cast."
Torbran, Thane of Red Fell72%
$5.21↑#1001↑0.58↑6.9 years↓
"If a red source you control would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead."
Embermaw Hellion72%
$0.30↑#14309↑0.14↑11.1 years↓
"If another red source you control would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead."
March of Reckless Joy72%
$0.26↑#7702↑0.10↑4.5 years↓
"As an additional cost to cast this spell, you may exile any number of red cards from your hand. This spell costs 
less to cast for each card exiled this way."
less to cast for each card exiled this way."
Hotheaded Giant72%
$0.04↓#314710.0018.1 years
"This creature enters with two -1/-1 counters on it unless you've cast another red spell this turn."
+1 more matching line
Tattermunge Duo72%
$0.11↓#298950.0018.3 years
"Whenever you cast a red spell, this creature gets +1/+1 until end of turn."
Paragon of Fierce Defiance72%
$0.20↑#15534↑0.27↑12.1 years↓
"Other red creatures you control get +1/+1."
Rattleblaze Scarecrow72%
$0.29↑#16724↑0.29↑18.3 years
"This creature has haste as long as you control a red creature."