As far as I'm aware there really aren't any other cards like Chandra's Ignition. Generally the spell is what deals the damage and the creature is either just a variable, or sacrificed as an additional cost.
Cards that I can find that let creatures deal damage directly to a player's face:
Arcbond (If the creature is dealt damage) Backlash (their own creature hits them)
The Blood half of Flesh//Blood Delirium (a card I had no idea existed until just now, works like Backlash above) Gravitic Punch (you can even do it again) Harsh Justice (is a weird take on a vaguely similar effect, makes all creatures that hit you also hit their controller, but you probably don't want to be taking many hits to the face in the first place, so eh)
There's Lightning Volley and a few other cards similar to it for go-wide/token strategies. Letting each of your creatures ping a target for 1.
If your opponent is the one going wide, there's Rakdos Charm (mode 3: each creature deals 1 damage to its controller)
There are other cards that let your creatures deal damage to other creatures, but I couldn't find all that many that let them hit players.
The Blood half of Flesh//Blood Delirium (a card I had no idea existed until just now, works like Backlash above)
... Harsh Justice (is a weird take on a vaguely similar effect, makes all creatures that hit you also hit their controller, but you probably don't want to be taking many hits to the face in the first place, so eh)
Yeah, you found the Gruul half of a Rakdos/Gruul split card (which means everything in EDH, a Rakdos card, and a white card when he asked for monored.
Card advantage is not the same thing as card draw. Something for 2B cannot be strictly worse than something for BBB or 3BB. If you're taking out Swords to Plowshares for Plummet, you're a fool. Stop doing these things!
The Blood half of Flesh//Blood Delirium (a card I had no idea existed until just now, works like Backlash above)
... Harsh Justice (is a weird take on a vaguely similar effect, makes all creatures that hit you also hit their controller, but you probably don't want to be taking many hits to the face in the first place, so eh)
Yeah, you found the Gruul half of a Rakdos/Gruul split card (which means everything in EDH, a Rakdos card, and a white card when he asked for monored.
To be honest, I completely skipped over the mono-red specification. I was simply looking for any card that had a vaguely similar effect without consideration for color.
is it the player of creature damage you care about more?
EDH Primers
Phelddagrif - Zirilan
EDH
Thrasios+Bruse - Pang - Sasaya - Wydwen - Feather - Rona - Toshiro - Sylvia+Khorvath - Geth - QMarchesa - Firesong - Athreos - Arixmethes - Isperia - Etali - Silas+Sidar - Saskia - Virtus+Gorm - Kynaios - Naban - Aryel - Mizzix - Kazuul - Tymna+Kraum - Sidar+Tymna - Ayli - Gwendlyn - Phelddagrif 4 - Liliana - Kaervek - Phelddagrif 3 - Mairsil - Scarab - Child - Phenax - Shirei - Thada - Depala - Circu - Kytheon - GrenzoHR - Phelddagrif - Reyhan+Kraum - Toshiro - Varolz - Nin - Ojutai - Tasigur - Zedruu - Uril - Edric - Wort - Zurgo - Nahiri - Grenzo - Kozilek - Yisan - Ink-Treader - Yisan - Brago - Sidisi - Toshiro - Alexi - Sygg - Brimaz - Sek'Kuar - Marchesa - Vish Kal - Iroas - Phelddagrif - Ephara - Derevi - Glissa - Wanderer - Saffi - Melek - Xiahou Dun - Lazav - Lin Sivvi - Zirilan - Glissa
PDH - Drake - Graverobber - Izzet GM - Tallowisp - Symbiote Brawl - Feather - Ugin - Jace - Scarab - Angrath - Vraska - Kumena Oathbreaker - Wrenn&6
RBGLiving EndRBG
EDH
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Cards that I can find that let creatures deal damage directly to a player's face:
Arcbond (If the creature is dealt damage)
Backlash (their own creature hits them)
The Blood half of Flesh//Blood
Delirium (a card I had no idea existed until just now, works like Backlash above)
Gravitic Punch (you can even do it again)
Harsh Justice (is a weird take on a vaguely similar effect, makes all creatures that hit you also hit their controller, but you probably don't want to be taking many hits to the face in the first place, so eh)
There's Lightning Volley and a few other cards similar to it for go-wide/token strategies. Letting each of your creatures ping a target for 1.
If your opponent is the one going wide, there's Rakdos Charm (mode 3: each creature deals 1 damage to its controller)
There are other cards that let your creatures deal damage to other creatures, but I couldn't find all that many that let them hit players.
Burning Anger
Dong Zhou
(U/B)(U/B)(U/B) JUMP IN THE LINE, ROCK YOUR BODY IN TIME
(R/W)(R/W)(R/W) RISING FROM THE NEON GLOOM, SHINING LIKE A CRAZY MOON
(U/R)(R/G)(G/U) STEALIN' WHEN I SHOULD HAVE BEEN BUYIN'
Yes. Infect does not specify combat damage.
RBGLiving EndRBG
EDH
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BRXantchaRB
BGVarolzGB
URWZedruuWRU
The Unidentified Fantastic Flying Girl.
EDH
Xenagos, the God of Stompy
The Gitrog Monster: Oppressive Value.
Marchesa, Marionette Master - Undying Robots
Yuriko, the Hydra Omnivore
I make dolls as a hobby.
Yeah, you found the Gruul half of a Rakdos/Gruul split card (which means everything in EDH, a Rakdos card, and a white card when he asked for monored.
Anyway, may I suggest Soul's Fire?
On phasing:
Rupture has the spell deal the damage though, not the creature, so it doesn't interact with creature abilities like deathtouch, lifelink or infect.
To be honest, I completely skipped over the mono-red specification. I was simply looking for any card that had a vaguely similar effect without consideration for color.