If a snake (or any other cold-blooded mammal) was in an environment like Balduvia for any period of time, they'd enter a state of suspended animation. Their bodies stop working. That's why there are no cold-blooded animals native to the Arctic or Antarctic.

No, I know that. What I'm saying is that the flavour text for Ohran Viper implies that having antifreeze compounds in your blood means you're not cold-blooded, which is not true.

It has antigelid venom in its veins, not blood. Hence not cold-blooded or any type of blooded. Sentence 2 is not a reason for sentence one, it`s the alternative.

The terms warm blooded and cold blooded don't have anything important to do with the properties of the creatures' blood, or even the presence of it They are misnomers for the terms endothermic and exothermic. Mata Hari's point stands.

It has acid for blood so clearly its a xenomorph and doesnt need any heat period.

The stupidest, yet somehow most reasonable conclusion.

Or if we take it in a meta sense, the real reason is that yes, the person who wrote the flavour text was a dingus.
I want to see an exothermic arctic-dwelling monster. THat seems like a cool little detail to help it feel alien. "The Xlyryx has the same body temperature of the Arctic winds with which it defends itself. "

TP you're thinking endothermic. Endothermic creatures have the same temperature as their surroundings, while exothermic creatures can sustain their own temperature.

This is unambiguously the dumbest conversation in history.

Unmake is close enough

Stop

Instant
Counter target permanent spell.

Rescue from History

Sorcery
Return target enchantment card from your graveyard to the battlefield.

Infernal Retriever

Creature -- Demon
5/5
Flying
When Infernal Retriever enters the battlefield, return target creature card from your graveyard to the battlefield.

Aetherflame

Instant
Aetherflame deals 3 damage to target creature or planeswalker.

Infernal Retriever 3BB
Creature - Demon Hound
Lifelink
When ~ Enters the battlefield, return target creature from your graveyard to the battlefield. You lose life equal to that creature's toughness.
/He provides unconditional love. All he asks is your love in return, and maybe a few bones./
2/2

But that's so cute ^_^.

Nevermind, I'm the idiot.

My train of thought was "exothermic reaction therefore generates heat".

I think Bad to the Bone might have to be a rare. You should win when you cast it in limited.

EDIT: I guess I learned the correct term is ectothermic, not exothermic. Someone should update spellcheck and autocorrect.

I imagine Bad to the Bone as a red Overrun or Enlarge except it requires a little less preparation but doesn't cause card advantage (by forcing chump blocks.).
(Of course, Bad to the Bone is savage in sacrifice decks, but Overrun/Enlarge are just as savage in tokens/ramp.)

Stubborn Fool
Creature - Human Rebel
Protection from you
"If I wanted your help, I'd ask for it. Let me do me, and you do you."
3/2

Clarity of Purpose
Enchantment — Aura
Enchant creature
Enchanted creature gets +2/+2.
"I know who I am and why I'm here, and I'll wield these answers like a blade."
—War diary of Astrid, Knight of the Order of the Silver Cake Fork, final entry