Due to its rarity and the fact that the Sun and Moon sets are no longer in print, the demand for the card is high considering its limited supply
These cards naturally pair well with Monstrous Rage, efficient cantrips, and burn spells, so Cori-Steel Cutter is a natural inclusion in the deck
Its activated ability also fuels its own triggers, ensuring a steady stream of damage while filling graveyards for further synergies
Until then, may your typal decks do their own thing.
in cEDH, Blood Pet is often found in Krrik, Son of Yawgmoth builds as a way to net an extra mana for 2 life, but also sees a lot of play in Inalla, Archmage Ritualist and Ad Nauseam lines to rush out these expensive spells or aid in comboing off with other cards to win the game