Thermopod

The sacrifice ability is what gives this Slug a job beyond combat: every creature it eats becomes a single red mana, turning a board state into a ritual engine. That free outlet is the structural core, and it pairs with the snow-fueled haste in a way that rewards a very specific kind of deck: one stocked with creatures that want to die, recursive bodies, and a payoff for converting them into a burst of mana all at once. The haste clause is the quieter half, paid with snow mana to push a freshly summoned attacker into the red zone, but it is the conversion of creatures to mana that defines what the card is for. Compare it to the long line of free sacrifice outlets across the game's history (Phyrexian Altar, Ashnod's Altar): those add colorless or untyped mana and read as combo tools, while this one funnels strictly into red, narrowing the design to red-aligned sacrifice strategies. The cost of admission is a 4/3 body for five, which is mediocre on rate and means the outlet has to be the reason you run it, not a bonus stapled to a beater. It sits in a niche where snow lands and a glut of expendable creatures already overlap, an engine piece for a build that has somewhere to spend the mana it generates and a steady supply of bodies to feed it.